With a lot of difficult problems ________, the newly-elected president is having a hard time.
| A．settled | B．setting | C．to settle | D．being settled |
Lady Gaga has put off her concerts because of the difficulties ______ by the ongoing strikes.
| A．causing | B．to be caused | C．caused | D．to cause |
—Jane, have you finished your paper?
—No, I ________ my sister with her drawing all the morning.
| A．help | B．helped | C．was helping | D．have been helping |
Mo Yan won the Nobel Prize in 2012. Many fans are eagerly waiting for his new novel to ______.
| A．come out | B．turn out | C．make out | D．go out |
Jack looked very calm ________ the quarrel with his desk mate.
| A．due to | B．because of | C．as a result of | D．in spite of |
How ________ I help them to understand when they don’t listen?
| A．must | B．dare | C．can | D．may |