Something must be done to prevent factories sending out poisonous gases so as to keep the city _________.
A polluting B. from polluting C. pollute D. from being polluted
He spoke very slowly, but he still didn’t get his meaning _______.
A across B cross C through D though
I’m sorry if I hurt your feelings. I didn’t _______.
A expect to B mean to C do that D hope so
This has made _______ possible for us to catch up with the developed countries.
A that B it C us D our country
Last month I came to Britain. My English has improved a lot _______ I use it all the time.
A unless B while C when D as
______ for some time after a tiring day is very enjoyable and exciting for me in summer.
A Swim B Swimming C Go swimming D To swim