I’m not a teacher in this school.I _____ until a new teacher arrives.
#101643
A
am just helping out
B
could just help out
C
just help out
D
have just helped out
推荐题目
He ______________ two tickets for us before he arrived at the entrance of the cinema. 
#99545
A
had reserved
B
has reserved
C
was reserving
D
has been reserving
 — The floor is dirty.— Yes. It _______ for two days.
#99920
A
hasn’t swept
B
didn’t sweep
C
hasn’t cleaned
D
hasn’t been cleaned
Everything he ______ away from him before he returned to his home town.
#104228
A
took
B
had been taken
C
had had been taken
D
had taken