14. Could ---> Should

15.are ----> is

16.often dismiss ----> are often dismissed

1) The teacher suggested that i could =>should buy a good dictionary
2) Measles are an infectious disease that cause=>causes fever and small red spots
3) Alternative therapies often dismiss => are often dismissed by orthodox medicine because they are sometimes administered by people with no formal medical training

14.The teacher suggested that I could buy a good dictionary .=>should

15. Measles are an infectious disease that causes fever and small red spots.=>is

16.Alternative therapies often dismiss by orthodox medicine because they are sometimes administered by people with no formal medical training.=>are often

a=>will

will pay=>pay

Refer:

1 sang => singing

2 submitted => submit

3 paid => pay

4 suggest => suggests

5 to work => working

6 was => were (phân vân were và is)

7 is cleaned => to be cleaned

8 go => to go

1 sang => singing

2 submitted => submit

3 paid => pay

4 suggest => suggests

5 to work => working

6 was => be

7 is cleaned => to be cleaned

8 me => that I

1 buy => bought

2 jean => jeans

3 for => since

4 doing => do

5 meet => met

1. Buy => bought

2. Jean => jeans

3. For => since

4. Will => are

5. Meet => met

Chúc bạn học tốt!! ^^

41 I often (look into) new words (in) the dictionary (whenever) I don't know (their) meaning. => look up to
42 Simon (takes part with) many (different) volunteer (programs) (in) his town. => takes part in
43 (Could) you please look (at) my chilren (when) I'm (away)?  => after
44 She (continued) (writing) after she (had) (supper). => had had
45 (Mr. Thach,.) who (sing) (English songs) very well, (is) my teacher of English. => sings
46 (Mr. Thach), (who sing) English (songs) very well, (is) my teacher of English.
47 Why (are there) a shortage of (available) apartments (for rent) in this city (at present)? => is there
48 (There are) differences (and similarities) between (Vietnamese) and American (culture). => cultures
49 Can you (tell me) where (that) apples (over) there (come from)? => those
 50 There are many (variety) of English all over the world (such) as (British) English, American English and (Indian) English. => varieties
51 (Eivel thousand pounds (were) stolen (from) (the) bank. => was
52 She (did not) know where (most of the) people in (the) room (was from). => were from
53 (The) Caspian Sea, (a salt lake), is (the largest) than any other (lakes) in the world. => larger
54 (The) humming-bird (is) one of the (most) smallest birds we (know) of.  => bỏ
55 (The) humming-bird is (one) of the (most) smallest birds we (know) of.
56 Happiness is (a) most important (thing) (in) (my) life. => the
57 The (better) you (are at) English, (more chance) you have to (get a job) with international organizations. => the more
58 (His) doctor (advised) him (to stop) (to smoke). => smoking
59 She (avoided) (to talk) to me because I (tried) (to tell) a lie to her. => talking
60 We (had) decided (going) for (a short walk) in the park (before dinner). => to go

61 My sister enjoys (listening) (to music) and (dance with) her (friends). => dancing with
62 My sister (enjoys) (read) about (wild animals) and (natural) mysteries. => reading
63 You (have) eat (nutritious) foods to (stay) (healthy). => have to
64 You (must) (steamed) the dish (in) thirty minutes, or else it (is) still raw. => sream
65 I (think) your garden needs (to weed) and you (had better) do it (right now). => weeding
66 It is (very) difficult (for) us to (preventing) forest fires (during) the drought.  => prevent
67 They are going (to have) (to leave) soon and (so do) (we). => so are
68 (At the moment) I am (spending) my weekend (go to) (camping) with myfriends. => going
69 My brother stopped (to smoke) (because) it was (harmful (for) him. => smoking
70 The park (keeper) told us (not walk) on (the grass) or we (would be) fined. => not to walk
71 (Mr. Smith) is going (to buy) a new (Japanese) car, (doesn't he)? => isn't he
72 (You) need (your) shoes (to repair), (don't) you? => reparing
73 You have (read) this (interesting) article (on) the website, (have you)?  => haven't you
74 We are (making) a car (which) will be (run) (on) Solar energy. => by
75 Maiused to (going) to school (late) (when) she (was) in primary school. => go
76 My father used to (giving) me (some good) advise (whenever) I had (a problem). => give
77 John used to (smoking) cigarettes (when) he (was) a young (man). => smoke
78 You can (apply for) a better job (when) you (will have had) (more experience). => have
79 They were (walking) through Nguyen Hue (Avenue) (while) an accident (happened). => when
80 Iwish today (is) sunny (so that) I (could spend) the day (in the country). => were
81 (Nam) (wishes) he (can speak) English (fluently). => could

1. who -> which

2. whom -> which

3. paint -> painted

4. which -> who

5. whom -> that/ which

1. We could had done more if we had had more time. --> have

2. He said that if he has more time , he would come to see us. --> had

3. While  I did my homework , I had a good idea. --> was doing

4. Don't make so much fusses over the children. --> fuss
5. John's friends had celebrated a  farewell party for him last Sunday. --> celebrated

1, could had ⇒ could have

2, has ⇒ had

3, did  ⇒ was doing

4, fusses  ⇒ fuss

5, had celebrated  ⇒ celebrated

6A->there were

7A->enjoyed

8C->∅

9C->working

10B->widely

so => neither