Three fourths of the homework _________ today.
#102838
A
has done
B
has been done
C
have done
D
have been done
推荐题目
The number of foreign students _________Chinese Universities_________ rising steadily since 1990.
#101617
A
attending; has been
B
who attending; is
C
to attend; is
D
attended; has been
 ________ the classroom, the teacher found all the parents already______ there.
#103135
A
Entered; seated
B
Entering; seating
C
Entered; seating
D
Entering; seated