【单选题】
＿＿＿ your letter，I would have started off two days ago.
①
If I could have received
②
Should I receive
③
Had I received
④
If I received
【单选题】
If I had remembered __________ the window, the thief would not have got in.
①
to close
②
closing
③
to have closed
④
having closed
【判断题】
If I have any comments to make, I’ll write them in the ___margin___ of the book I’m reading
①
正确
②
错误
【单选题】
-May I help you?-___. Do you have any apple juice?
①
Sure
②
Thank you
③
No, thanks
④
I don’t think so
【单选题】
I had to complete the assignment by Friday [] otherwise, I would have failed the course.
①
comma
②
semicolon