Much new high technology has been introduced from America, ________ a great increase in the production of the company.
| A．resulting in | B．having led to | C．contributed to | D．caused |
I can __________the house being untidy, but I hate it if it’s not clean.
| A．come up with | B．put up with | C．live up with | D．keep up with |
When asked why he prefers bikes to buses, the professor said, “Riding a bicycle takes __________ half an hour, but it’s more convenient and environmentally friendly. ”
| A．absolutely | B．accurately | C．approximately | D．exactly |
I like __________in the early morning when the air is fresh and I can take a walk around the garden.
| A．that | B．it | C．which | D．what |
Beijing was attacked by such a terrible sandstorm __________few citizens has ever experienced before.
| A．where | B．as | C．when | D．which |
It was announced that only when the fire was under control __________to return to their homes.
| A．the residents would be permitted |
| B．had the residents been permitted |
| C．would the residents be permitted |
| D．the residents had been permitted |