找出单词的正确译文，将其标号填入前面的括号内。
Is the cat ________ the door? No, 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. see B. will see C. am seeing
—— What day is today? —— It's ______.
A. Monday B. a fine dayC. September 1st
The students couldn't help ______ when they heard the joke.
A. to laugh B. laugh C. laughing
Do you know ______ this word?
A. what to spellB. how to spell C. to spell