_______of the household rubbish___recycled or reused since the new technology was applied.
| A．Three-fourth; has | B．Three-fourths; have |
| C．Three-fourths; has been | D．Three-fourth; have been |
They haven’t arrived yet but we _____ them at any moment.
| A．are expected | B．have expected |
| C．are expecting | D．will expect |
____ has helped to save the drowning girl is worth praising.
| A．Who | B．The one |
| C．Anyone | D．Whoever |
I feel sure I _____ her before somewhere.
| A．was to meet | B．have met |
| C．had met | D．would meet |
I had neither a raincoat nor an umbrella. _______ I got wet through.
| A．It’s the reason | B．That’s why |
| C．There’s why | D．That’s because |
You’ll never guess who I met today — my old teacher！ We _____ for 20 years.
| A．don’t meet | B．haven’t met |
| C．hadn’t met | D．couldn’t meet |