As we know, Jean is a investor（投资者）who studies the market before he buys things.
| A．lucky | B．cautious | C．patient | D．generous |
---Was it under the tree ____ you were away talking to a friend?
--- Sure. But when I got back there, the bike was gone.
| A．that | B．where | C．which | D．while |
We must stop pollution _____ longer.
| A．living | B．from living | C．to live | D．live |
Who would you rather _____ the report instead of you?
| A．have write | B．have to write | C．write | D．have written |
I'm busy now. I'm sorry I can't help ____ the flowers.
| A．watering | B．watered | C．waters | D．to water |
In New Zealand, I made lots of friends ___ a very practical knowledge of the English language.
| A．get | B．to get | C．getting | D．got |