The old lady’s hand shook frequently.She explained to her doctor ______ this shaking had begun half a year before, and, ______ only because of this, she had been forced to give up her job.
| A．when;how |
| B．how;when |
| C．how;how |
| D．why;why |
_______ the composition, John handed it to the teacher and went out of the room.
| A．Writing | B．Having written | C．Written | D．Being written |
."Can you read?" Mary said _______ to the notice.
| A．angrily pointing | B．and point angrily | C．angrily pointed | D．and angrily pointing |
The visiting Minister expressed his satisfaction with the talks, _______ that he had enjoyed his stay here.
| A．having added | B．to add | C．adding | D．added |
"We must keep a secret of the things _______ here", the general said, _______ at the man in charge of the information office.
| A．discussed, stared seriously | B．being discussed, seriously staring |
| C．to be discussed, seriously stared | D．discussed, stared |
.China is one of the largest countries in the world, _______ 9.6 million square (平方) kilometers.
| A．to cover | B．covered | C．covers | D．covering |