问题

More attention should be paid to ______ our environment. [ ]

A: protect
B: protecting
C: prevent
D: preventing

正确答案是：

同类题型

Wang Ping can’t be in the bedroom, ?

下列各句中，表达得体的一句是

The girl glanced over her shoulder and found herself ______ by a young man in black[ ]

People have always been _____about exactly how life on earth began. [ ]

The twins didn’t go to the theatre, they ______ thelight music all night.