The railway will be opened______traffic＿＿＿ May 1, 2009.
| A．to； on | B．to； in | C．by； on | D．for； on |
. Jack almost fell off the cliff, but managed to _____ until help came.
| A．keep on | B．catch on | C．count on | D．hang on |
The storm sweeping over this area now is sure to cause _____ of vegetables in the coming days.
| A．rarity | B．scarcity | C．invalidity | D．variety |
. Don't _____ the news to the public until we give you the go-ahead (许可，准许).
| A．release | B．discard | C．relieve | D．retain |
The farmers were more anxious for rain than the people in the city because they had more _____.
| A．at length | B．at last | C．at stake | D．at ease |
When I took his temperature, it was two degrees above _____.
| A．average | B．ordinary | C．regular | D．normal |