Is the cat ________ the doorNo, it isn’t. It’s ________ the desk.
| A．behind, under | B．in, on | C．under, at | D．over, behind |
If I ____ you tomorrow, I will give you the receipt.
A. seeB. will see C. am seeing
—— What day is today —— It's ______.
A. Monday B. a fine day C. September 1st
The students couldn't help ______ when they heard the joke.
A. to laughB. laugh C. laughing
Do you know ______ this word?
A. what to spell B. how to spell C. to spell