Since you are always working hard at your lessons, your efforts will ________.
| A．pay off | B．pay for |
| C．pay back | D．pay out |
The wounded soldiers were _____ danger, because we had run _____ medicine.
| A．in; of | B．into; out | C．at; up | D．in; out of |
The workers and technicians worked hard _____ to get the Great Hall finished before National Day.
| A．like a crazy | B．as a crazy |
| C．like crazy | D．as crazy |
She turned ______ the pages quickly _____ a practiced hand.
| A．on; at | B．over; with |
| C．back; for | D．for; by |
The roads are lined _____trees, which have been planted to hold _____the strong winds from the north.
| A．along; to | B．on; up |
| C．with; back | D．in; against |
He earned enough money to start his own business _____ offering guide services _____ tourists.
| A．by; to | B．with; at |
| C．on; for | D．through; with |