My brother and I _____ walking the family dog.
A. by turns
B. in turn
C. take turns
D. on turn
It is said that these sandstorms _____ the desert.
A. derive in
B. originate in
C. come in
D. strive in
The coming public performance, her first one, will certainly put the young singer to the test.
A. 大获成功
B. 使......接受考验
C. 使......面临曝光
D. 大展身手
Who is crazy enough to go swimming when there is a _____ of ice on the lake?
A. film
B. school
C. pack
D. layer
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