问题

Your suggestion sounds very good, but thereare many ___ difficulties we have to face.

A:can’t finish
B:popular
C:productive
D:practical

正确答案是：

同类题型

Middle school students hardly know anything aboutshopping online, ____ they? — ________. It’s very popular withteenagers.

Do you remember ________ when the car accident happened

How long do you think ____ the computer company launches a new model?

What a mess！You are always so lazy!—I’m not to blame，mum.I am you have made me.

Gillard’s ride totop of Australian politics wasrough one.