5) It was nosy.The children............. a party A) were having B) had C) had had D) was having ________________________--- There was a time when letter.............................really a means of comunication A) were B) was C) had been D) has been ______________________ 7) at last the bus came.WE ..........................for half an hour A) waited B) was waiting C) have waited D) had been waiting __________________ Everyone.............................when he......................to the party A) were dancing/came B) danced/came C) was dancing/came D) danced /was coming ________________________________ I...................difficult Math puzzles since I..........a child A) solved/have been B) had solved /was C) have solved/was D) solved/was ______________________ My mother .................................as a shop assistant when she ....................a student A) use to work/was B) used to worked/was C) use to worked/was D) used to work/was GIẢI THÍCH CHI TIẾT NHÉ

5 a( vì câu trươcs là quá khứ mà câu tiếp thao lại diễn tả một hành động trong quá khứ )

6 c

7 d ( Thì hiện tại hoàn thành tiếp diễn diễn tả quá trình một hành động xảy ra trong quá khứ trước một hành động khác)

8 a were dancing/came

9 b HTHT + Since + QKĐG: mệnh đề sau Since sẽ chia ở thì quá khứ đơn giản

10 d vì sử dụng used to trong mục đích một việc đã làm trong quá khứ mà hiện tại không làm nữa

5) It was nosy.The children............. a party

A) were having B) had C) had had D) was having

Câu trước là quá khứ

6) There was a time when letter.............................really a means of comunication

A) were B) was C) had been D) has been

7) At last the bus came.WE ..........................for half an hour
A) waited  B) was waiting  C) have waited  D) had been waiting

Hiện tại hoàn thành

8)Everyone.............................when he......................to the party

A) were dancing/came  B) danced/came C) was dancing/came D) danced /was coming

Qúa khứ đơn

9)I...................difficult Math puzzles since I..........a child

A) solved/have been B) had solved /was C) have solved/was D) solved/was

Sau since chia ở quá khứ đơn

10)My mother .................................as a shop assistant when she ....................a student

A) use to work/was B) used to worked/was C) use to worked/was D) used to work/was

S + used to + V