2． Look ! __________ children__________ playing on the playground．A． The number of，areB． the number of，isC． a number of，areD． a number，is
2． Look ! __________ children__________ playing on the playground．
A． The number of，are
B． the number of，is
C． a number of，are
D． a number，is
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__________. with children is a much better way to get to know them than to talk with them in a formal way. A. To playB.PlayC. PlayedD. Playing
2．—What's your _______ number?—________347- 5186．A． phone ;He'sB． bike ;That'sC． phone ;It'sD． bike's ;It's
Teachers warn students that () to computer games is dangerous.A、likingB、addictionC、preferenceD、playing
24、如果Number=7，下列命题为真。 If Number = 7, point out the truth or false of the following expressions. Sqrt（Number*Number ) == Int（Sqrt（Number*Number))