英语疑问Those infants are badly in need of our help,so I’m afrai

英语疑问
Those infants are badly in need of our help,so I’m afraid we can stay abroad only --------
A one and a half weeks b one and a half week
Key:a
怎么表达用week单数?
Here are all kinds of mobile phones in the center.together with----made in china,you can also find-----phones imported from Japan and other Asian countries.
A ones…some b those a few
Key:b
A为什么不对?
You must try to be brief and----when you speak.
A to the point b at the point c hit on the point d directly stay at the point
Key:a
to the point是什么成分阿?是try to the point吗?但try to 后面不时应该加do么?
Standing there still watching the exciting match,the announcer felt something hard----on his right shoulder.
A laid b lay
Key:a
不是Feel sb do/doing 应该用b阿
It’s already 10.i wonder why----person has beeni in the hall so far
A no single b not a single
Key:b
A为什么不对啊?
It is known to everyone that high management and production costs will definitely lead to high --------in the market.
A values b prices
Key:b
A为什么不对啊?