Taylor has completed a study on _______.
A. bird's nets
B. nests of bird's
C. nests of bird
D. bird's nests
The man is not _________.
A. enough scholar
B. much of a scholar
C. much scholar
D. enoughof scholar
The town goes through many crises __________.
A. in 10 year's time
B. in 10 years of time
C. in 10 years time
D. in 10 year's of time
They two are aware of _________ worries.
A. each others
B. each others'
C. each other
D. each other's
微信支付 
支付宝支付