I didn’t know ________ the professor would give us a lecture in the hall.
#55178
A
where
B
when
C
what
D
why
推荐题目
—______ does your mother go for a walk？ —Every afternoon.
#56080
A
How long
B
How often
C
How much
D
How many
A tourist will easily lose his way in Shanghai_____ he has a map or a guide.
#56219
A
if
B
since
C
while
D
unless
We can easily become unhappy_____ we work out our problems in our daily life.
#58265
A
after
B
if
C
until
D
unless