-- You can use MSN to talk with Vivien on the Internet. --- I know. But can you tell me ________?
What action should they _____________such a thing happen again?
You must stop and wait for your turn when you see the sign______.A. B. C.
Mr. Green ____ go to bed ____ he finished his work last night. A. does; until B. don’t; until C. didn’t; until
when I heard the bad news I couldn’t help ________ .A. laughing B. dancing C. crying
Kate doesn’t run as ________ as Jim. A. fast B. faster C. fastest