1.You'd better ____ when you have some food in your mouth.
问题描述：
1.You'd better ____ when you have some food in your mouth.
A.don't speak B.not speak C.not to speak D.not speaking
2.This is____bottle.It is ____empty bottle.
A.the;an B.a;an C.a;an D.a;a
能说明为什么吗?
B应该是a;the
答
1 B had better not do sth 最好不要做什么
意为 当你嘴里在吃东西时最好不要说话
2 c 这是一个瓶子,他是一个空的瓶子.
empty 前应加 an