Ex.1:

1, It rains very much in the summer .It is raining now.

2, Bad students never work hard.

3, He genenally sings in English, but today he is singing in Spanish.

4, We seldom eat before 6.30.

Ex.2:

1, However, I have had no trouble wish my car since then.

2, I haven't seen John for a long time, I saw him 3 weeks ago.

3, I met Mary last night. She becomes a very big girl.

4, He is very thirsty. He hasn't drunk since this morning.

5, It is very hot. Summer is coming.

6, Mr. Brown travelled by air several times in the past.

Mấy câu mik trả lời đều đc gạch chân rồi!

Xin ctlhn!

  ~HỌC TỐT~

Ex1:

1. rains - is raining.

2. works.

3. sings - sings.

4. eat.

Ex2:

1. have had.

2. haven't seen - saw.

3. met - has become.

4. hasn't drunk.

5. has come.

6. has travelled.