use something to do something: sử dụng cái gì để làm gì đó
=> People use a tooth sensor to detect any bacteria causing cavities, or any other infections in your teeth.
Tạm dịch: Người ta sử dụng một bộ cảm biến răng để phát hiện các loại vi khuẩn gây sâu răng, hoặc các loại nhiễm trùng khác trong răng của bạn.
Đáp án cần chọn là: D
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Manufacturers may use (A) food additives for preserving (B) , to color, or to flavor (C) , or to fortify foods (D) .
A. may use
B. for preserving
C. to flavor
D. to fortify foods
Part III. GRAMMAR
Exercise 5. Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
51. Hoang ____ his email four times a week in order not to miss anything important.
A. checks B. will check C. is checking D. check
52. Nowadays, people ____ social networks with more and more caution.
A. uses B. are using C. used D. use
53. At the moment, my sister ____ her homework, my brother ____ games.
A. is making - is playing B. is doing - is playing C. does - plays D. makes - is playing
54. It’s 7.00 p.m. now and we ____ meal together. We usually ____ dinner at that time.
A. have - eat B. have - are eating C. are having - eat D. are having - are eating
55. I ____ a bike to school every day but today I ____ to school by bus because it was stolen yesterday.
A. rode - went B. ride - am going C. ride - go D. is riding - am going
56. That Hoa ____ in class affects other students around.
A. always talk B. is always talking C. always talks D. always talking
57. Hoang and Phong ____ football as they’re having class now.
A. don’t play B. are playing C. doesn’t play D. aren’t playing
58. Hoa usually ____ charge of doing the washing-up in her family.
A. takes B. is taking C. take D. will take
59. Our friends ____ for the fashion show now.
A. is preparing B. are preparing C.prepares D. prepare
60. All staff in this restaurant ____ an urgent meeting right now.
A. are attending B. is attending C. attends D. attend
61. After the physics lesson, the children know that water ____ at 100 degrees C.
A.will boil B. is boiling C. boils D. boil
62. My mom ____ to the supermarket every Sunday for shopping.
A. goes B. go C. is going D. are going
63. Look! Minh ____ on stage. She looks so beautiful.
A. sings B. are singing C. is singing D. sang
64. Bich sometimes ____ chicken noodle soup for breakfast.
A. are having B. is having C. have D. has
65. Who ____ the guitar in that room, Hoa?
A. playing B. is playing C. play D. plays
66. Jenny often ____ jeans and T-shirt at school but she ____ a gorgeous dress today.
A. wears - is wearing B. is wearing - wears C. wear - is wearing D. wears - wears
67. First thing in the morning, I ____ a cup of milk tea.
A. has B. am having C. have D. will have
68. Ms. Kim ____ very well when she’s under pressure.
A. not work B. don’t work C. isn’t working D. doesn’t work
69. I’m sorry, Lan is busy now. She ____ her document on the second floor.
A. are checking B. check C. checks D. is checking
70. Hurry up, Linh. Other friends ____ for us.
A. are waiting B. waits C. wait D. is waiting
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
I (A) clearly (B) remember (C) to tell you (D) about this before.
A. clearly
B. remember
C. to tell
D. about
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
It is (A) common for Japanese (B) to adapt foreign customs and (C)make them (D) their own.
A. is
B. Japanese
C. and
D. them
Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
In (A) traditional Indian families, the (B) parents used to arranging (C) the marriage for (D) their children.
A. In
B. the
C. to arranging
D. for
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
The Great Pyramid (A) of Giza s (B) said to (C) have built over (D) a 20-year period.
A. of
B. said
C. have built
D. a
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction.
Mrs. Stevens, along with (A) her cousins (B) from Canada, are (C) planning to attend (D) the firework display in Da Nang, Vietnam.
A. with
B. her cousins
C. are
D. to attend
Choose the letter A, B, C or D to complete the sentences
The reason ___________ I phoned him was to invite him to a party.
A. what
B. whose
C. why
D. which
Choose the letter A, B, C or D to complete the sentences
I use a laptop __________ to music and watch videos.
A. listen
B. to listen
C. listening
D. listened
Choose the letter A, B, C or D to complete the sentences
Minh had a terrible headache. _______, he went to school.
A. However
B. But
C. Although
D. Because
