He seems too tired today, and I wonder _________ he got a good sleep last night.
#30205
A
when
B
that
C
if
D
where
推荐题目
________ you read English easily, you'll find it is another cup of tea to make conversation in English.
#30295
A
So long as
B
As soon as
C
Even if
D
Only if
______ there is a snowstorm or other bad weather ,the bus always comes on time.
#79889
A
Because
B
if
C
When
D
Unless
He had to be reminded two or three times ________ he could avoid making the same mistake.
#33440
A
before
B
until
C
when
D
after