He _______to us that the outside of the earth is made of a number of different plates(板块).
| A．told | B．explained | C．promised | D．seemed |
It is the experience he had as a boy ______ has formed his present personality.
| A．that | B．what | C．which | D．who |
______ with severe drought in some areas, Chinese government is taking active measures to ensure people’s essential needs.
| A．Facing | B．Faced | C．To face | D．Being faced |
That is the man ____ house the police found the lost computer last week.
| A．in whose | B．in what | C．in that | D．in which |
He found that complex problems, especially those _____ abstract thinking, were best for picking out bright and dull students.
| A．involve | B．involved | C．involving | D．being involved |
. Don’t promise anything _____ you are one hundred percent sure.
| A．if | B．after | C．in case | D．unless |