On September 9, 1850, California was admitted to the Union______
A.being thirty-first state
B.as the thirty-first state
C.for the thirty-first state
D.the thirty-first state

Relative humidity is the amount of water vapor the air contains at a certaintemperature______ with the amount it could hold at that temperature.
A.to compare
B.compared
C.comparing
D.compares

“You missed a good chance in your career." “Yes, I ______that job when Mr. Johnson offered.”
A.shall take
B.shall have taken
C.should take
D.should have taken

A.collective
B.climatic
C.abundant
D.regional

A.originate
B.evacuate
C.sanitary
D.certificate

Tony’s boss gave him permission to take two days off.
A.Tony’s boss left the office for two days.
B.Tony quit his job after two days.
C.Tony took two days off from work.
D.Tony's boss agreed to take off for two days.

The police were told that the use of unnecessary force was forbidden.
A.The police were forbidden not to use unnecessary force.
B.The police were forbidden to use unnecessary force.
C.The police were instructed not use unnecessary force.
D.The police were instructed to use unnecessary force.

We were surprised when she suddenly came back.
A.She suddenly came back made us surprised.
B.The fact that she came back suddenly was surprised.
C.All of us found it surprising when she suddenly came back.
D.All of us are amazed to see her come back.

Please don’t use the shower after midnight.
A.Would you mind not to use the shower before midnight?
B.Would you like to use the shower before midnight?
C.I don’t want you to use the shower.
D.Would you mind not using the shower after midnight?

(50)
A.grow
B.develop
C.make
D.do