The tree _________ are green in spring. A.leafs B.leaves C.leaf
Is the cat ________ the door? No, it isn’t. It’s ________ the desk.
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 laugh B. laugh C. laughing
Do you know ______ this word?A. what to spell B. how to spell C. to spell