It was at 12 o’clock _________ they came home from school.
| A．what | B．when | C．that | D．Which |
People often make fun of him about his height, which makes great difference in his life.
| A．a; a | B．a; the | C．x; a | D．the; a |
--Mary, have you got my email? I sent you a birthday card yesterday.
---Oh, really! I haven't ＿＿＿my mailbox yet.
| A．seen | B．checked | C．received | D．answered |
I haven't settled the problem of I'll go back home during the coming May Day.
A which B. what C. whether D. where
---Don't be so naughty! Be your ________.
---Got it.
| A．manners | B．age | C．behavior | D．politeness |
--Excuse me, sir. Would you do me a favour?
---Of course. What is it?
---I ________ if you could tell me how to fill out this form.
| A．had wondered | B．was wondering | C．would wonder | D．did wonder |