从右栏选项中选择左栏各句的正确应答，并将答题卡上该选项涂黑。

小题1: How long does it take you to get to school?

小题2: Would you Like coffee or tea, Cindy?

小题3: Could you please clean your room?

小题4:When is your birthday, Emma?

小题5: What's this in English, Victor? 

钻孔灌注桩桩长在20m以上，至少应制取( )组试件。

A．1

B．2

C．3

D．4