The manager _______ the workers how to improve the program since 9 a.m. 
#102020
A
has told
B
is telling
C
has been telling
D
will have told
推荐题目
According a recent survey, if the factory closes, a lot of people _______ their jobs.
#101220
A
are going to lose
B
will lose
C
may lose
D
are about to lose
Although the causes of cancer ________, we do not yet have any practical way to prevent it.
#103264
A
have uncovered
B
have been uncovering
C
are uncovering
D
are being uncovered
The old professor has such a bad memory that he looks for the watch while he is ___.
#103986
A
having it on
B
having on it
C
wearing it
D
putting it on