Only the factory ____ yesterday ____  this kind of machines.
#83079
A
did we visit; does it produce
B
did we visit; produces
C
we visited; produces
D
we visited; does it produce
推荐题目
_____ you eat the correct foods _____ be able to keep fit and stay healthy. 
#82299
A
Only if; will you
B
Only if; you will
C
Unless; will you
D
Unless; you will
So much of interest ________ that most visitors run out of time before seeing it all.
#82551
A
offers Beijing
B
Beijing offers
C
does Beijing offer
D
Beijing does offer
Bob could have seen the famous pop star ______ yesterday morning.
#81757
A
did he come
B
if he came
C
had he come
D
if he should come