While __________ for the bus, I happened to come across my childhood friend, Tom.
#68214
A
waited
B
wait
C
waiting
D
to wait
推荐题目
Regulations require__________needs special diets the cooking manager in advance.
#73952
A
who; informs
B
whom; informed
C
whomever; inform
D
whoever; inform
The girl in plain clothes, was wonderfully calm in face of danger, was just sixteen years old.
#70018
A
when
B
which
C
what
D
who
The news has spread all over the country ____ the spaceship succeeded in returning to the earth.
#68158
A
which
B
that
C
whether
D
what
–What do you think of teaching, Bob?–I find it fun and challenging. It is a job ___ you are doing something serious but interesting.
#74648
A
where
B
Which
C
When
D
that
What the doctors really doubt is _____________ my mother will recover from the serious disease soon.
#73938
A
when
B
how
C
whether
D
why