– Did you notice John was not at work today?
--- No. If _____working, I would have noticed it.
| A．I’d be | B．I wasn’t | C．I’d been | D．I weren’t |
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 |
His landlady gave him a week's _____ to leave the flat.
| A．threat | B．notice | C．advice | D．caution |