1 . The twins ________ the guitar at this time the day before yesterday. I think they might be preparing for the art festival these days.

A．were heard playing

B．heard to play

C．heard playing

D．were heard to play

2 . As we all know, _____ should be taken to prevent the accident_____ again.

A．measures; happening	B．strengths; happening
C．measures; to happen	D．strengths; to happen

3 . _____ you are a big boy, you should not do things like a baby.

A．As if	B．Now that
C．Before	D．Though

4 . _____! The car is coming so fast!

A．Break out	B．Turn out
C．Watch out	D．Bring out

5 . After the speech, the boy went back to _____his mother was sitting.

A．when

B．where

C．whether

D．why

6 . Jane's father encouraged her to make friends        her new classmates.

A．to

B．for

C．on

D．with

7 . Keep        , Jim. Your sister has just fallen asleep.

A．busy

B．clean

C．quiet

D．fit

8 . Look! The girl          on the stage is my cousin, Lily.

A．singing

B．sung

C．sing

D．sings

9 . Let’s set out right now,        we will be late for our flight.

A．and

B．or

C．but

D．so

10 . He has read a lot of books on arts        he wants to be an artist in the future.

A．because

B．though

C．once

D．unless