—Is it that Jack often plays computer games    makes his parents worry about him ?—Yes , I think so .               
#85207
A
what
B
when
C
that
D
which
推荐题目
It ______ we had stayed together for a couple of weeks _____ I found we had a lot in common.
#85010
A
was until; when
B
was until; that
C
wasn’t until; when
D
wasn’t until; that
This river has changed its course many times. It _________ always located where it ________ at present.
#85380
A
isn’t; is
B
isn’t; will be
C
wasn’t; is
D
wasn’t; has been
--     you called yesterday evening? ---My sister. Why?
#85225
A
Who it is that
B
Who is it that
C
Who was it that
D
Who it was that