Though there are some differences in American education and Chinese education, both systemsare ______ excellent graduates. [ ]

The sun ___ we get heat and light is the most important source of energy.

The woman will think of her own child ______ she ______ these little children

Has she had for the job—Yes, she has taught English for more than 10 years.

This dress still looks pretty on you, _______ it is out of style．