[单项选择]Since you don't have a dictionary here, why not use ______
A. my
B. mine
C. her
D. their

[单项选择]Why don't you start out early （） you don't have to hurry.
A. not until
B. since then
C. so that
D. as if

[单项选择]

Have you ever wondered why different animals or pests have their particular colors Colors in them seem to be used mainly to protect themselves.
Birds, especially seagulls, are very fond of locusts, but birds cannot easily catch locusts because locusts change their colors together with the change of the color of crops. When crops are green, locusts look green. But when crops are ripe, locusts take on exactly the same brown color as crops have. Some other pests with different colors from plants are usually easily found and eaten by their enemies. So they have to hide themselves in terror for lives and appear only at night.
If you study the animal life in any part of the world, you will find the main use of coloring is to protect themselves. Bears, wolves and other beasts move quietly through forests. They are usually invisible to the eyes of hunters, because they have the color much like the barks of trees.
An even more strange act remains to be noticed. A
A. the change of color in locusts
B. the protective coloration of animals and pests
C. how a certain sea fish protects itself
D. animals or pests can dye themselves different colors

[单项选择]— Why don't you come and play tennis with us this afternoon
—（　）.
A. That's a great game
B. Yes, I think so
C. That's a good idea
D. No, let me see

[单项选择]-Why don't you come and play tennis with us this afternoon

[单项选择]You never told us why you were late for the last meeting, （　）
A. weren't you
B. didn't you
C. had you
D. did you

[单项选择]You never told us why you were late for the party, ______

[单项选择]Why don't you have a night out It would take your______ off your worries.
A. cares
B. head
C. mind
D. heart

[单项选择]Speaker A: Tom, why don't you come and have the picnic with us
Speaker B:______

[单项选择]A: Why don't you have dinner with me tonightB: ______

[单项选择]You don't have to ______ the majority; you have a right to disagree.
A. get through with
B. catch up with
C. go along with
D. hold on to