The government has taken measures air quality.
| A．to improve | B．improved |
| C．being improved | D．to be improved |
Peter’s jacket looked just the same as Jack’s, but it cost _____ his.
| A．as much twice as | B．twice as much as |
| C．much as twice as | D．as twice much as |
---Thank you for your timely help.
--- My pleasure. It is hardly talking about.
| A．worthy | B．worthwhile | C．worth | D．useful |
She has tried her best. Please don’t be too ______ about her job.
| A．special | B．responsible | C．unusual | D．particular |
______ abroad for more than two years, he returned to his hometown.
| A．Studied | B．Studying |
| C．Having studied | D．To study |
——Shelooksveryhappy.Shehavepassedtheexam.
——Iguessso.It’snotdifficultafterall.
| A．should | B．could | C．must | D．might |