根据所给句意和音标,选出一个最佳答案.
You need to keep /′sailənt/when you are in the library.( )
A.sillyB.smileC.smartD.silent
Parents should always tell their kids ________ with strangers.( )
not to talk
not talking
to not talk
not talk
He was so angry that he could say_________.( )
anything
nothing
something
everything
He has many friends at school._____?( )
has he
does he
doesn't he
isn't he
Mary____ a math problem with her classmates when the math teacher knocked at the classroom door.( )
has discussed
was discussed
was discussing
discusses
______you practice, _________you will be at math.( )
The more; the better
The more; the best
The most; the better
The most; the be