The ______ of air and water makes it impossible to live on the moon.
| A．presence | B．absence | C．dependence | D．evidence |
Professor Zhang gave all the textbooks to all the pupils, except ________ who had already taken them.
| A．these | B．ones | C．the ones | D．the others |
Although he sometimes loses his temper, his students like him ________ for it.
| A．not so much | B．not so little |
| C．no more | D．no less |
．________ all over the hills and around the lake are wild flowers of different kinds.
| A．To grow | B．Growing | C．Grown | D．Grow |
I think that this meal was well worth ________ was charged for it.
| A．that | B．what | C．which | D．how many |
—The experiment is of particular importance.
—I see. We will carry on with it ________ we can get enough money.
| A．unless | B．though | C．whether | D．until |