—You needn't take an umbrella.It isn't going to rain.—Well, I don't know.It________do.
I found it quite necessary ______ a foreign language.
______ in Shanghai for more than ten years, he know the city very well.
Study hard , ______ you will not pass the exam .
I hate going out alone,so I often ask my friend to ________me.
Harry Potter is such an interesting book _______all kids like to read.