Having finished their work, the workers expected to be paid.
A.The workers expected to be paid because they had finished their work.
B.Having expected to be paid, the workers finished their work.
C.Having their work finishing, the workers expected to be paid.
D.Having been finished their work, the workers expected to be paid.

Immediately after her arrival, it rained heavily.
A.No sooner had she arrived than it rained heavily.
B.As soon as she arrived, it rained heavily.
C.No sooner she had arrived than it rained heavily.
D.No sooner had she arrived when it rained heavily.

He was last in touch with me three weeks ago.
A.He hasn’t been in touch with me for three weeks.
B.He has been in touch with me for three weeks.
C.The last time he was in touch with me for three weeks.
D.It is three weeks ago since he was in touch with me.

When did you last ride a bike?
A.How many times have you ridden a bike?
B.How long is it since you last rode a bike?
C.How long did you ride a bike?
D.How long have you ridden a bike?

She has run (A) for (B) the past (C) two hours, and now she is exhausted (D).
A.the past (C)
B.exhausted (D)
C.has run (A)
D.for (B)

I started to study (A) Chinese since (B) I was (C) at the age of 15 (D).
A.started to study (A)
B.at the age of 15 (D)
C.since (B)
D.was (C)

When (A) my father was reading (B), my mother was mopping (C) the floor (D).
A.the floor (D)
B.was reading (B)
C.was mopping (C)
D.When (A)

No sooner (A) had he gone out (B) when it rained (C) heavily (D).
A.rained (C)
B.heavily (D)
C.had he gone out (B)
D.No sooner (A)

Whenever (A) the little boy listens (B) to music, he will dance (C) along (D) with his mother.
A.Whenever (A)
B.will dance (C)
C.listens (B)
D.along (D)

When we arrived (A) at the cinema (B), the movie began (C) and it was (D) very dark.
A.began (C)
B.was (D)
C.at the cinema (B)
D.arrived (A)