The freezing point is the temperature __________ water changes into ice.

A.
atwhich
B.
when
C.
inwhich
D.
ofwhich

--Look! Someone ________ the floor.
--Well, it wasn’t me. I went shopping just now.

A.
had swept
B.
has swept
C.
was sweeping
D.
is sweeping

—Where on earth did you get the book?
— ______

A.
What did you say?
B.
I beg your pardon?
C.
Say it again!
D.
I didn’t get it on earth.

I'm sorry you ______ so long, but it' ll still be some time before Jim gets back．

A.
wait
B.
waited
C.
had waited
D.
have been waiting

American artist Jeremy Telford made a room with balloons． He got the____ from Bag End in Lord the Rings, which is a hole in the ground where a Hobbit（霍比特人）lives in the film．

A.
inspiration
B.
compensation
C.
occupation
D.
regulation

—Did you tell Rose about the test?
—Oh, no, I forgot. I call her now.

A.
will
B.
can
C.
should
D.
might

At the conference, Premier Li Keqiang urged all the government departments ______ effective measures to improve work efficiency.

A.
took
B.
must take
C.
take
D.
are to take

He’ll never forget the days ____ he stayed with his grandmother in the village.

A.
where
B.
that
C.
which
D.
when

---Why, Emily, you look so energetic!
---Well, I ______ in the gym for a slim figure so far.

A.
am working out
B.
had been working out
C.
worked out
D.
have been working out

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