--When _____ the abacus _____? -- In the sixth century by the Chinese people.
—Look at the sign, what does it mean? —It means “_____”. A. Don’t talking B. No talking C. Not talk
—_____ will your English teacher come back? —In two days. A. When B. How long C. How soon
—I think teenagers should ___ to get their ears pierced. —I agree with you. A. are allowed B. not be allowed C. not allowed
My parents often ask me _________ too much time ______ computer games. A. not to spend; playing B. not to spend; to play C. to not spend; play
—Can you tell me _____________? —About two months ago.