It __ be the vocyou the problem in the exercise because you know a lot of words.

The problem of poverty is particularly ________ in rural(乡村的)areas.[ ]

____you eat the correct foods_____be able to keep fit and stay healthy

To be sure, the new cut in interest rate（利率）is _______ to improve economic performance in all these fields.

What does the boy like—______ his father he _______ eating mangoes.