87. It took me a long time to get used ……… .

A. to have glasses wear​C. wearing glasses

B. to wear glasses​D. to wearing glasses

88. My friends usually enjoy my ______ of humor.

​A. sense​B. kind ​C. means​D. form

89. You will have to ……… your holiday if you feel too tired.

A. put down​B. put out​C. put off​ D. put up

90. This is the place……… the battle took place ten years ago.

A. which​B. in where​C. where​D. from where

91. A(n)______ is a very heavy fall of snow, usually with a strong wind.

A. snowstorm​B. earthquake ​C. volcano ​D. typhoon

92. The entrance examination will be held………….June 22nd2012.

A. in ​B. on​C. at ​D. to

93. Many houses were ___ by the earthquake last year.

A. destroy​B. destroying​C. destroyed​D. to destroy

94. Police officers don’t have to wear uniform when they are ______ duty.

A. on​B. in​C. of​D. off

95. You ________ eat these mushrooms. They are poisonous.

A. needn’t​B. mustn’t​C. can’t​D. may not

96. You should run a lot, swim everyday. You must be in excellent _____ condition.

A. mental​B. optional​C. total​D. physical

97. I live in Da Lat, ________ is one of the most beautiful cities of Vietnam.

A. who ​B. which​C. whom ​D. whose

98. Do you know the man………………… met our teacher yesterday?

A. who​B. whom​C. which​D. whose

99. Have you ever seen Picasso’s La Guerre, __________ is really a masterpiece?

A. who​B. they​C. which​D. that

100 .My sister ________ for you since yesterday.

A. is looking​B. was looking​C. has been looking​D. looked

1. Lan and Maryam are penpals. They _________ each other twice a month.
A. writing B. write C. has written D. wrote

2.That man is ................ deaf to hear what we say.
A. so B. enough C. too D. Not

3.After drinking a big bottle of __________, he got drunk.
A. wine B. milk C. water D. orange juice

4. She was ill, ............., she offered to help.
A. although B. because C. therefore D. however

5.Van feeds the chickens, Sam gardens, …… Peter collects eggs.
A. and B. though C. or D. because

6.Vietnamese language is different ……… English language.
A. from B. on C. in D. at

7.Neil Armstrong, ________walked on the moon, lived in the USA.
A. which B. whom C. who D. whose

8.My favorite . ……………. is Literature.
A. play B. game C. subject D. activity

9.You need a password to get __________ to the computer system .
A. access B. information C. programs D. connection

10.They rarely go skiing in the spring, _____________?
A. do they B. are they C. don’t they D. aren’t they

11.It is an impressive building …….. on a large square.
A. to build B. build C. builds D. built

12. Tom cut down the tree in the garden last week,____?
A. didn't he B. did he C. doesn't he D. does he

13.There aren't _____ eggs left in the fridge, so we will go to the supermarket to buy some.
A. much B. several C. some D. any

1.He went to the office ……………… check the progress of the work.

2.She asked me …

……………….. to another country in the region.

3.There ............................ no rain here since last month.

A. is ​B. has been​C. was​ D. had

4.Where _____ you go if you have a car?

A. would ​B. will ​C. have ​D. did

5.They didn't understand the matter; _______ , they didn't use for help.

A. but ​B. moreover​C. however ​D. and

6.Lan was very __________________ after she watched a cartoon

A. excite B. excited ​C. exciting ​D. excitement

7.There are many _____________________ throughout the year.

A. celebrate ​B. celebrating ​C. celebration ​D. celebrations

8.Lan and Maryam are pen pals. They …… each other twice a month.

A. writing ​B. write​ C. haswritten ​D. wrote

9.Lan enjoyed the peaceful atmosphere ……… Maryam was praying.

A. when ​B. during ​C. while

D. where

10.Nam: “………do you practice speaking English?” --- Lan: “Twice a week​

A. How fast​B. How long ​ C. how many​D. How often

184. The weather was bad, .......... we didn't go on a picnic.

A. however B. but C. because D. so

185. Ann's birthday is ........ February 14th.

A. in ​B. on C. for D. at

186. When we came to visit her last night, she___________TV

187. My father _________ teaching in a small village 10 years ago

A. starts ​B. started ​C. has started D. is starting

188. We have lived in Hanoi _________ 4 years

A. in B. since C. for D. At

189. Lan and Maryam are penpals. They _________ each other twice a month.

A. writing B. write C. has written D. wrote

190. Maryam was really ............... by the beauty of Hanoi.

A. impressed B. impress C. impression D. impressive

191. Vietnamese people are very ...................

A. friend B. friendless C. friendly D. Friendship

192. We were having dinner ……… the telephone rang.

A. when B. while C. until D. what

193. I …… call you as soon as I come back home.

A. have B. will C. am D. is going

194. Would you mind …… the door?

A. open B. opened C. opening D. to open

195. My family loves this house. It ……… the family home since my grandfather built it 60 years ago.

A. was B. is C. has been D. will be

196. I …… it 5 years ago.

A. have been B. saw C. was seeing D. am seeing

197. We ……… in Lenin Park when it rained.

A. walked B. have walked C. were walking D. walk

198. I often play soccer …… Sunday afternoon.

A. in B. at C. on D. after

1. Lan is only 12 years old. She has to .......her parents.

A. depend to​B. depend on​C. live to ​D. live on

2. Life in the city is different ……………….. life in the country.

3. Are all the student used.........................their summer vacation in the countryside?

4. John gave up …………………stamps.

A. collect​B. to collect​C. collected​ D. collecting

5. They are going to buy a map ………get lost.

A. not so as to ​B. so not as to​C. so as not to​D. so not to

6. Her former leader suggests that she should ………harder to break her past records.

A. to train ​B. train ​C. training​D. trained

7 While ......for the bus I saw a theft.

​A. wait​B. waited​C. waiting​D. having wait

8.

If you want to get good grades, you ................................. study hard.

​A. must​B. can​C. ought​D. shall

Đốt cháy hoàn toàn 20 l hỗn hợp khí gồm CO và CO₂ cần 8 l khí oxi ( các khí đo ở cùng điều kiện nhiệt độ và áp suất). Hãy xã định thành phần % theo thể tích trong hỗn hợp .

Giải đầy đủ giúp mình với ạ !!!