I'll go to the library as soon as I finish what I ________.
#105315
A
was doing
B
am doing
C
have done
D
had been doing
推荐题目
— ________ for the glass! —It’s OK. I’m wearing shoes. 
#105336
A
Look out
B
Walk out
C
Go out
D
get out
With more forests being destroyed, huge quantities of good earth ______ each year.
#105331
A
is washing away
B
is being washed away
C
are washing away
D
are being washed away
Although the causes of cancer ____we do not yet have any practical way to prevent it.
#105341
A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
 Britain is being ________ in the race for new markets.
#105311
A
left alone
B
left out
C
left behind
D
left over