Question

1到上学期为止,你们学会了多少首歌

Answer 1

have you learned

Since last night

have arrived

has known

when we arrived at the cinema

We haven't seen each other since we met yesterday.

I didn't give Wei Hua that book because he had already bought one himself.

He asked whether Mr.Li had been back.

I heard that he had been there for 5 years.