If we can _____ our present difficulties, then everything should be all right.
| A．get off | B．come across | C．come over | D．get over |
---Is Bob still performing?
---I’m afraid not. He is said ___ the stage already as he has become an official.
| A．to have left | B．to leave | C．to have been left | D．to be left |
The scientist ___ his research for a lack of fund.
| A．deserted | B．c anceled |
C．abandoned | D．quilted |
Charles Babbage is generally considered ___ the first computer.
| A．having invented | B． inventing | C．to have invented | D．to invent |
I send you 100 dollars today, the rest ___ in a year.
| A．follows | B．followed | C．to follow | D．being followed |
An army spokesman stressed that all the soldiers had been ordered ____ clear warnings before firing any shots.
| A．to issue | B．being issued | C．to have issued | D．to be issued |