Not even when _____through the darkest valley _____be afraid, for you are always close beside me.
| A．do I walk; will I | B．do I walk; I will | C．I walk ; I will | D．I walk; will I |
_______they visited the Science Museum, they showed great interest in everything they saw.
A For the first time B. At first
C. At the first time D. The first time
To their disappointment, they found the lecture given by the professor difficult__________.
| A．to be understood | B．to understand |
| C．understanding | D．understood |
As soon as he heard the ________ news of his death, she _______ tears.
| A．shocked; burst out | B．shocking; burst into |
| C．shocked; burst into | D．shocking; burst out |
----I’m going to the United States.
---- How long ____you ____in the States ？
| A．are; stayed | B．are; staying |
| C．have; stayed | D．did; stay |
He often helps the students _________he thinks are not quick at their studies.
| A．whom | B．whose | C．when | D．who |