问题

re reserve for white－flag dolphins was set up in 1992, ________ boats have beenprohibited from sailing around since then.

A:where
B:which
C:when
D:what;

正确答案是：

同类题型

He paid the boy 10 yuan foe washing ten windows, most of ____ hadn’t been cleaned for at least a year.

His brother often _________a kite onSundays.

下列各句中，加点字解释正确的一项是

Tom and John are going swimming with________ boys this afternoon

They have arrived at lunchtime but their flight was delayed.