Crops died of drought for ____________ water.
| A．lack | B．lacking of |
| C．a lack | D．lack of |
—You may find the key to the math problem on page 107．
—Ah, it's so simple. I wonder why I _____ of that．
| A．hadn’t thought | B．haven't thought | C．didn't think | D．wasn't thinking |
Cars do cause people some health problems, in fact far more serious _____ than computers do.
| A．one | B．ones | C．it | D．those |
More people are choosing to work _____ retirement age，since the living expenses are shooting up sharply.
| A．under | B．beyond | C．against | D．for |
On seeing_____ gift they wanted, the kids screamed with _____ delight.
| A．/; a | B．a; the | C．the; / | D．the; a |
Compared with male graduates, a(n) ______ small number of female graduates can get employed when they go job-hunting.
| A．casually | B．relatively | C．roughly | D．gradually |