The city park will be cleaner ___________ people stop dropping litter here and there.
| A．while | B．if | C．unless | D．before |
She was veryus for informing her of her son’s safe return.
| A．grateful to | B．grateful for |
| C．grateful | D．grateful with |
Your advice will help memy English.
| A．afford | B．cure |
| C．improve | D．Affect |
—Has she hadfor the job?
—Yes, she has taught English for more than 10 years.
| A．enough experience | B．enough experiences |
| C．many experiences | D．much experiences |
—Mum, I want to have some milk.
—There is none. What about orange juice?
| A．have | B．leaving |
| C．left | D．Leaves |
Here is international call for you.
| A．a | B．an |
| C．the | D．/ |