John and I ________ to visit his grandparents last Sunday afternoon．（ ）
| A． |
go |
B． |
went |
C． |
will go |
D． |
have gone |
Mum，I'm going to school now．See you．
______，Marry．（ ）
A．Here we goB．Wait a moment
C．My pleasureD．Have a nice day
Opposite my house is ______．My ten﹣year﹣old son often goes there with his classmates on Saturday．（ ）
A．a museum that is open on weekdays
B．a swimming pool that is designed for adults
C．a cinema which sells tickets at a lower price
D．a library which will be completed in two years
Simon looks worried because he a writing competition and now he's waiting for the result．（ ）
A．entersB．entered
C．will enterD．is entering
We've ordered too much food．I eat any more．
Never mind．Let's take it home．（ ）
A．can'tB．mustn'tC．needn'tD．shouldn't
_____ the scientists have done lots of research on Mars，there is still much waiting to be discovered．（ ）
A．IfB．SinceC．UnlessD．Though