__________ her son for half a month, Marcia decided to leave for Texas with the hope of finding him.
| A．Not heard from | B．Having not heard from |
| C．Not to hear from | D．Not having heard from |
There is a common belief among the students in our school ______ they should make great efforts to learn and reach the peak of their academic performances.
| A．which | B．if | C．that | D．whether |
The maker of the popular game Angry Birds announced on Tuesday that it would open its first overseas operation in Shanghai, ______ a clear step to further enter the booming Chinese market.
| A．to mark | B．marking | C．marked | D．having marked |
On the one side of the road grass should be planted, and ______.
| A．on the other are flowers | B．on another flowers |
| C．on the other flowers | D．on another are flowers |
March 5th is the official “Learning from Lei Feng Day” when people are ______to learn from Lei Feng, a cultural image symbolizing selflessness and contribution.
| A．called on | B．called up | C．called in | D．called off |
Facts prove that the world’s economic development is not a win-lose game but one in which all ______ be winners.
| A．shall | B．can | C．must | D．will |