The best times to visit Shangri-la are spring and autumn ___ the temperature is at its mildest.
#66540
A
where
B
on which
C
when
D
in that
推荐题目
---- Is it high time that we _____ on the school building? ---- Yes, it _____.   
#73483
A
do some repairs; is
B
do some repair; is
C
did some repairs; is
D
did some repair; was
This is the reason ___ I agree to it.
#73616
A
that
B
why
C
what
D
A and B
 When ______ help, one often says “Thank you.” or “It’s kind of you.”
#68004
A
offering
B
to offer
C
to be offered
D
offered