We could not reason out the way the robbers escaped，because we were unable to find any ________ of them.
| A．chance | B．trace |
| C．point | D．signal |
While ____ in tea with that dealer, Mr. Smith had himself ____.
| A．trading; ripped off | B．buying; ripping off |
| C．selling; ripped off | D．purchasing; rip off |
. Mary _____ be in London because I saw her in town just now.
| A．mustn’t | B．isn’t able to | C．needn’t | D．can’t |
You’d better not phone me between two and six o’clock this afternoon; I ___
a speech then.
| A．will give | B．will have been giving |
| C．will be giving | D．will have given |
With tags(标签) _____ to the luggage, it won’t take long for the passengers to find theirs correctly..
| A．attaching | B．attached | C．to attach | D．attaches |
Mr. White graduated from _____ Cambridge University with a degree in ____ physics.
| A．the; a | B．a; a | C．a; the | D．/; / |