— Susan! Shall We go out for a picnic this weekend？
— Oh，with all this work ______, I don’t know if I’ll have time to go out.
| A．to do | B．doing | C．done | D．do |
China is expected to export 1 billion mobile phones this year, ________ by a surge in demand for smartphones worldwide.
| A．drive | B．driving | C．to drive | D．driven |
Misunderstandings ________ from lack of social communication, unless ________ properly, may lead to serious problems.
| A．arisen; handling | B．arising; handled |
| C．rising; handled | D．risen; handling |
The text is too difficult. The explanation of our teacher will help make it easy ________.
| A．to understand | B．to be understood |
| C．understood | D．understanding |
It is said that sixty percent of all energy ________ in the world today is being lost as waste heat.
| A．produced | B．producing |
| C．to produce | D．having produced |
________ clearly ________ nothing to do, the soldiers left the village the next day.
| A．It; was | B．It; being |
| C．There; was | D．There; being |