let's______(完整形式)
A．let us B．let does
My birthday is ________ April 16th.
A. ofB. onC. in
Can I play ________ her now?
A. withB. toC. in
---_____tail is that? ---It’s the tiger’s.
A. Who’sB. WhichC. Whose
---Sorry, what are you ___________?
---I’m speaking Chinese.
A. sayB. sayingC. says
Look _______ my summer vocation plan.
A. atB. inC. on