A new study found ______ a teacher has anxiety about math, ______ feeling can influence how his or her female students feel about math.
| A．when that; which | B．that when; that |
| C．that if; which | D．if that; that |
What impressed me in Greece was that the oceans _______ the islands were deep blue and many cities lay on the bay.
| A．surrounding | B．being surrounded | C．surrounded | D．surround |
Researches show that the taller you are, the more _______ you are to suffer back pain.
| A．likely | B．possible | C．perhaps | D．probable |
One way to ______ species under threat of extinction is to remove them to zoos and parks and feed them there.
| A．reserve | B．prevent | C．preserve | D．reduce |
According to the statistics, listening to loud music at rock concerts ______ hearing loss in some teenagers in the past 2 decades.
| A．have caused | B．caused | C．had caused | D．has caused |
__________ 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 |