Where____ he ____ for his next vacation?
| A．does, leave | B．is, leave |
| C．is, leaving | D．is, leaveing |
I like to travel on high-speed trains because they are usually . While planes are behind schedule (晚点) too often.
| A．at times | B．on time |
| C．at the time | D．on the time |
----What a nice bike! How long ____ you ____it? ----- Just two weeks.
| A．have, bought | B．did, buy |
| C．have, had | D．are, having |
When his wife died, he lived ______; his lovely pet dog made him feel less ______.
| A．alone, alone | B．lonely; alone |
| C．lonely; lonely | D．alone; lonely |
All the students know shouting at the elderly is impolite.
| A．can | B．could | C．must | D．need |
We can’t work out this problem. Can you tell us ______ ?
| A．how to do | B．what to do it |
| C．how to do it | D．what should to do |