--- 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 |
—What do you think about the idea?
—I am really against _________ a running race in the street.
| A．to have | B．having | C．to having | D．have |
—Do you know whose dictionary it is?
—It ________ be Ann’s. Look! Her name is on the first page.
| A．must | B．could | C．might | D．can |
—Why does John look so sad?
—Lingling _________her ice cream on his new shoe.
| A．lost | B．fell | C．dropped | D．left |
—The boy is ________for his age.
—Yes, I was much _______when I was his age.
| A．enough tall; shorter | B．tall enough; shorter |
| C．enough tall; taller | D．tall enough; taller |
—What’s this?
—It’s a machine which was invented in __________century in China.
| A．six | B．sixth | C．the six | D．the sixth |