Because the shop ______, all the T-shirts are sold at half prices.
A.has closed down B.closed down
C.is closing down D.had closed down
He asked me ______ with me.
A.what the matter is
B.what the matter was
C.what is the matter
D.what was the matter
Zhangye has set up Qilian Mountain Nature Reserve，______ animals and plants can be protected well．
A.from which B.why C.when D.where
"Not all birds can fly"means ．
A.All birds can not fly B.No birds can fly
C.None of birds can fly D.All birds can fly
The scientists showed great ______ the warming of the earth．
A.interest in B.love for
C.concern about D.attention for
More strict measures to protect Heihe River Basin in a few years．
A.have been taken B.will be taken
C.were taken D.had taken
