1 . —Excuse me, Madam, but is this the way to the town center? I am afraid I ________ the right direction.
—Keep on walking and you can’t miss it.

A．don’t walk in	B．am not walking in
C．haven’t walked with	D．am not walking with

2 . Jack can’t attend the meeting this week because he ________ for London on business.

A．leaves

B．is leaving

C．left

D．leave

3 . Mr. Blake ________ Shanghai in a few days. Do you know when the earliest plane ________ on Sunday?

A．is leaving; is taking off	B．leaves; takes off
C．is leaving; takes off	D．leaves; is taking off

4 . —Excuse me. I ______ for Shanghai this Saturday. Please tell me when the earliest plane_________.
—Just a moment, please I will check it for you.

A．am to leave; will take off	B．am leaving; is taking off
C．am leaving; takes off	D．am about to leave; takes off

5 . Sam ______ advanced literature next term.

A．take

B．is taking

C．took

D．has taken

6 . I’m s______from a toothache now and I determine not to eat any candies in the future.

7 . The fertilizers used on many farms are ________(污染) the water supply. （根据汉语提示填空）

8 . Sir, could you please take your seat? The plane       .

A．takes off

B．has taken off

C．is taking off

D．took off

9 . Look at the timetable! The flight to Shanghai ________ at 10 o'clock. That’s to say, it ________ in two hours.

A．will leave, is leaving	B．will leave, will leave
C．leaves, will leave	D．leaves, is leaving

10 . It is reported that many a new house _____ at present in the flood-stricken area.

A．are being built	B．have been built
C．will be built	D．is being built