In English class, our teacher often creates an environment __________ we are given the opportunity to solve problems ourselves.
| A．where | B．when | C．which | D．that |
Of the two-child policy，_________ some see the bright side，others worry about a baby
boom in China．
| A．while | B．when | C．since | D．once |
“OK．Bingo!We win．_________, mom!” shouted Daniel，raising his hand．
| A．Give me five | B．You don’t say | C．Good heavens | D．Don’t mention it |
Last night, before the exam, I went over the lessons I couldn’t keep my eyes open to stay awake any longer.
| A．before | B．until | C．unless | D．when |
Too high house prices can be brought under control the authorities introduce a series of regulatory policies.
| A．even if | B．as if |
| C．so that | D．provided that |
Children should be instructed to put things they belong in their early childhood.
| A．where | B．in which |
| C．to which | D．what |