—How long do you think it is ________ he arrived here?    —No more than half a year, I believe.    
#104908
A
when
B
that
C
before
D
since
推荐题目
----- Hi, Tracy, you look tired. ------ I ________ the living room for three hours.
#101812
A
painted
B
had painted
C
was painting
D
have been painting
I arrived late; I ________ the road to be so icy.
#104760
A
wouldn’t expect   
B
haven’t expected
C
hadn’t expected
D
wasn’t expecting
I insisted that a doctor _______ immediately.
#103511
A
has been sent for
B
sends for
C
be sent for
D
will be sent for
When you are at home,give a call to let me know you            safely.
#100432
A
are arriving
B
have arrived
C
had arrived
D
will arrive