I don’t know _____ he will be back home.
#33403
A
who
B
what
C
when
D
where
推荐题目
We’ll have a picnic in the park this Sunday ________ it rains or it’s very cold.
#30506
A
since
B
if
C
unless
D
until
The cousins are alike in age, but _____ they are as different as day and night.
#34782
A
anyhow
B
besides
C
otherwise
D
moreover
It was several years later________ an American ship paid the first official visit to the island.
#33589
A
since
B
when
C
that
D
as
We all know the truth ______ there are air, water and sunlight, there are living things.
#33507
A
in wherever
B
where
C
that where
D
that