当你想知道新电视机的颜色时，问：
A. Where is the new TV?
B. What’s a TV?
C. What colour is the new TV?
( ) 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 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
( ) Be quiet! The babies ________.
A. sleep B. are sleeping C. slept