After the trainer was sure that the whale could look after itself, he __________it into the sea.
| A．transported | B．unloaded | C．released | D．handled |
The growing speed of a plant is influenced by a number of factors, ______ are beyond our control.
| A．most of them | B．most of what | C．most of which | D．most of that |
______ Chief Engineer, as his family had expected, made his father happy and proud.
| A．Mike being appointed | B．Mike’s appointed |
| C．Mike appointing | D．Mike’s being appointed |
Storm chasing is so dangerous that some chasers are often hurt in accidents ______ by driving in a heavy rain.
| A．having caused | B．caused | C．to be caused | D．causing |
Believe it or not, crying is a way you can imagine ______ pressure.
| A．relieving | B．to relieve | C．relieved | D．relieve |
All the clothes donated by the citizens need cleaning thoroughly before being sent to the earth-stricken area, ______ ?
| A．needn’t they | B．don’t they | C．didn’t they | D．shouldn’t they |