Relief work and selfless ______ aid continues, which helps deliver needed equipment to the disaster area.
| A．conventional | B．unusual | C．outstanding | D．voluntary |
His illness _____ his absence.
| A．showed | B．accounts for | C．explains | D．gives out |
You’ve been so kind to us that we will always be deeply _____.
| A．out of debt | B．in your debt | C．in trouble | D．in danger |
—Mr. Green was born in China.
—It’s no _____ he can speak Chinese so well.
matter B. doubt C. wonder D. problem
The meeting was to have started at nine o’clock, but the chairman had not _____ by ten.
| A．turned up | B．turned down | C．turned out | D．turned off |
We have planted thousands of trees in recent years. This year _____ we’ve planted ten thousand trees.
| A．even | B．just | C．alone | D．only |