Every possible means _______to prevent the air pollution, but the sky is still not clear.
| A．are being used | B．have been used | C．has been used | D．had been used |
Amy joined a painting group but didn’t seem to___,so she left
| A．show off |
| B．go up |
| C．fit in |
| D．come over |
—Wow!You’ve got so many clothes
—But___of them are in fashion now
| A．all |
| B．both |
| C．neither |
| D．none |
Thousands of people___to watch yesterday’s match against Ireland
| A．turned on |
| B．turned in |
| C．turned around |
| D．turned out |
___you may have,you should gather your courage to face the challenge
| A．However a serious problem |
| B．What a serious problem |
| C．However serious a problem |
| D．What serious a problem |
Listen！Do you hear someone___for help?
| A．calling |
| B．call |
| C．to call |
| D．called |