He never __________ to help those in trouble because he was a kind-hearted man.
| A．handled |
| B．hurried |
| C．hesitated |
| D．determined |
He has no money nor friends here. That’s why he ______ sleep in the street.
| A．must | B．has to | C．should | D．may |
It was said ____that was _____ he succeeded in running his business.
| A．that, what | B．that, that | C．what, how | D．that, how |
The farmers are only allowed to cut _____ tr
ees and cut them _____ for firewood once a year.
| A．down, up | B．up, down | C．off, across | D．down, out |
. Doctors say _____ good diet is of ______ great benefit to our health.
| A．a , a | B．the, a | C．a, / | D．the, / |
Mike is a student at a famous university, _______ for a doctor degree.
| A．studied | B．studying | C．to have studied | D．to be studying |