Rarely _____________________ .
| A．the temperature falls below zero here | B．falls the temperature below zero here |
| C．does the temperature fall below zero here | D．has the temperature fallen below zero here |
The computers made by our company sell best, but several years ago no one could have imagined the role in the markets that they _________.
| A．were playing | B．were to play | C．had played | D．played |
I really don’t think Rose will be upset, but I will go and see her in case she_____.
| A．is | B．does | C．will be | D．has been |
---- Where is your uncle’s home?
---- In New York. But he ______ in Boston for the past four years.
| A．had lived | B．is living | C．lives | D．has lived |
I’m terribly sorry for being late, but I _____ the wrong bus.
| A．catch | B．had caught | C．caught | D．catching |
Jimmy said that he would come to pick me up, but he _______ by now.
| A．hasn’t turned up | B．doesn’t turn up | C．won’t turn up | D．hadn’t turned up |