John and I ________ to visit his grandparents last Sunday afternoon．（ ）
| A． |
go |
B． |
went |
C． |
will go |
D． |
have gone |
My mother was badly ill in hospital yesterday． I had to look after her， so I didn't go to have the picnic．
______．（ ）
A．Never mind
B．I am sorry to hear that
C．No problem
The man______ is talking to my math teacher is my father．（ ）
A．whoB．whichC．what
_____ Wugang Airport_____ last year？（ ）
A．Did； buildB．Had； builtC．Was； built
Must I go home now？
No， you_______．（ ）
A．mustn'tB．needn'tC．shouldn't
Guangzhou is one of _____cities in China．（ ）
A．the biggestB．big
C．bigger