--- Where is your mother?
--- She _______ to Sichuan on business. She has ______ there four times recently.
| A．has gone, gone | B．has been, been |
| C．has gone, been | D．has been, gone |
Although he has failed many times, he keeps _____ hard to make his dream come true.
A. working
B. to work
C. worked
The person ______ called yesterday wanted to buy the house.
A. whichB. who C. whom
In spring, a lot of young trees _______ in our city.
A. are planted
B. plant
C. has been planted
—Could you please tell me _______the park as soon as possible?
—By bus, I think.
A. how can I get to
B. how I can get to
C. when I can get to
______ he was exercising at the park yesterday morning, he found a purse under the tree.
A. While B. Before C. Though