The professor held the crucible the Bunsen flame when heating the substance.
| A．in | B．above | C．beside | D．over |
.Sarah, hurry up. I’m afraid you wouldn’t have time to ＿＿before the party.
| A．get changed | B．get change | C．get changing | D．get to change |
.More patients＿＿ in hospital this year than last year.
| A．treated | B．have treated | C．had been treated | D．have been treated |
The officers narrowly escaped ___________ in the hot battle.
| A．have killed | B．to kill | C．to be killed | D．being killed |
. ___________ the letter, he went out to post it.
| A．Writing | B．Being writing | C．Having written | D．Written |
. Don't you remember ___________ ?
| A．seeing the man before | B．to see the man before |
| C．saw the man before | D．to have seen the man before |