Nancy quickly  ________ the door and put down her school things. 
#53553
A
opens
B
opened
C
has opened
D
is opening
推荐题目
— How is your English study?— Not bad. But I           learning English grammar.
#52052
A
am interested in
B
am good at
C
have a little trouble
D
have no trouble
Be quick! Jim _______________ for us downstairs.
#53584
A
waits
B
is waiting
C
will wait
D
waited