一Alex，go and clean your bedroom.
一I ________________ it.It's tidy and clean now.
A．have cleanedB．cleaned
C．clean
Who will _____ your shop while you are away？（ ）
| A． |
look after |
B． |
look at |
C． |
look for |
D． |
look up |
Go back _____ you come from．（ ）
| A． |
why |
B． |
where |
C． |
when |
D． |
how |
Do you know ________ the Smiths left Shanghai？
I'm not sure about the date．I only remember it was a Sunday．（ ）
| A． |
if |
B． |
why |
C． |
how |
D． |
when |
Could you tell me ______ you will come back？
In ten minutes．（ ）
| A． |
how soon |
B． |
how often |
C． |
how long |
D． |
how fast |
Look!Someone _______ the classroom．
Well，it wasn't me．I didn't do it．（ ）
| A． |
is cleaning |
B． |
was cleaning |
| C． |
has cleaned |
D． |
will clean |