We don’t know __________ he can make a plane by himself. It is amazing.
#35506
A
where
B
when
C
how
D
what
推荐题目
 --_______ does your father watch TV? --He is always busy, so he _______watches TV.
#35332
A
How long; sometimes
B
How often; hardly ever
C
How many; never
D
How much; always
Math is boring and       difficult.
#35947
A
of
B
too
C
any
D
some