The teacher _____ the students how to improve their writing skill since last term.
#100982
A
has told
B
is telling
C
has been telling
D
will have told
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 -I haven't heard from Henry for a long time. -What do you think ________ to him? 
#104036
A
happening
B
to happen
C
has happened
D
had happened
The meeting        for two hours,but they still       any agreement.
#102274
A
has been going on;haven’t reached
B
has been going on; haven’t been reached
C
was going on; haven’t reached
D
was going on; haven’t been reached