.---Sorry, Mum. I’ve lost my pen again.I_____it! You never remember to put your things away after using them.
#103679
A
knew   
B
know
C
have known   
D
will know
推荐题目
—Why were you so late this morning? —I _____ in heavy traffic for an hour on the way here.
#101422
A
have been caught
B
have caught
C
had caught
D
was caught
Egg prices usually  ________       in spring when they are most plentiful.
#99486
A
are dropping
B
drop
C
have dropped
D
will drop
Either you or the headmaster ________ the prizes to these gifted students at the meeting.
#103442
A
is handing out
B
are to hand out
C
are handing out
D
is to hand out
When I got home, I _____ I had left my wallet in the taxi
#102177
A
was realizing
B
realized
C
have realized
D
would realize
You ________ to leave until you _______ your work. 
#104496
A
won’t be allowed; have finished
B
won’t allow; finish
C
won’t be allowed; will finish
D
won’t allow; will finish