The boy likes planes very much and he often goes to see planes land and______．（ ）
A．take care ofB．take off
C．take afterD．take down
I can't go with you．I _______stay at home until my parents come back．（ ）
A．canB．mayC．mustD．could
Do you know whose iPhone6s this is？
Let me see．Oh，it's _______．（ ）
A．hersB．herC．himD．their
Which sign of the following means "No Smoking"？（ ）
A．
B．
C．
D．
The 31st Olympic Games will take place _______August 5，2016．（ ）
A．atB．ofC．inD．on
Have you read a book called "The Merchant of Venice"？
Yes．_______ book is very interesting．（ ）
A．AnB．AC．TheD．/