The houses in big cities are so expensive that I can’t __________ to buy one .

The meeting starts______9:00. Don’t be late.

What are you doing ,Jack? —I’m making a model carI _______ it in the science class at 10 o’clock tomorrow morning

The premier _____ the advanced workers, saying that they should not be those who had no _____.

I thought _______ very useful to know the customs of foreign countries.