Twenty boats left Tianjin, for the east at high speed.
| A．to set sail | B．to set sails | C．setting sail | D．setting sails |
Tell your brother to come _____, because it's going to rain in a minute or two.
| A．indoors | B．outdoors | C．outward | D．inwards |
A successful scientist needs _____ if he wants to make hypothesis (假设) of how processes work and how events take place.
| A．permission | B．penetration | C．imagination | D．convention |
This year the farmers were just able to gather in the _____ before the fine weather came to an end.
| A．collection | B．harvest | C．flower | D．plant |
He hated the war so much that he decided to leave the army _____.
| A．for long | B．once in a while | C．for good | D．once upon a time |
We suddenly saw the bus about to leave and had to run _____ to catch it.
| A．hardly | B．awkwardly | C．hard | D．strongly |