giúp em ạa
Ex1: Put the verbs into the correct form using past simple or present perfect tense.

1)We (study) ……………a very hard lesson the day before yesterday
2)We (study) …………………………almost every lesson in this book so far.
3)We (ever/ watch)……………………………..that television program
4)We (watch) ………………………….an interesting program on television last night.
5)My wife and I (travel)………………………by air many times.
6)My wife and I (travel)……………….. to Mexico by air last summer
7)I (read) ………………that novel by Hemingway several times before.
8)I (read) …………………….that novel again during my last vacation .
9)I (have) …………………….a little trouble with my car last week.
10)However,I (have )……………………. no trouble with my car since then.

11) I (have ) ………………..this toy since my birthday.
12)We (live )………………….in HN for ten years and we like it a lot.
13)It’s the first time we (join)………an English speaking contest.
14)When my parents were on holiday I ( stay)……………… with my aunt for a week
15)I (not/ see ) my son for ages . He (not/ visit ) ……………………..me since May
16)Tom (be) …………….to HN twice. He loves it very much
17)My sister (work ) ……………………for an enterprise for two years .

18)I (move)……………… to HN in 2001 .I (be ) ………….there since then
19)It was so cold yesterday, so I (wear)…………… a sweater at school
20)So far this month there (be )……………………. three robberies in this street
21)When I was young, I (meet )…………..him three times
22)In the past few years, it (become )……………….. more and more difficult to get into university
23)I (feel )………………better since I ( live) ……………….here
24) Since I (be ) ……………………in this city, I ( not see)…………… him