A clean environment can help the city bid for the Olympics, which will promote its economic development.
| A．in nature | B．in return | C．in turn | D．in fact |
The shop _____ until 7 o’clock.
| A．stayed opened | B．continues open | C．stays open | D．continues opened |
Tonny’s parents thought he was at school, but ______ he was in an Internet bar.
| A．actually | B．at present | C．especially | D．fortunately |
The boy asked his mother _______ go out to relax himself or not.
| A．whether could he | B．if he could | C．that he could | D．whether he could |
________ from space, the earth is blue.
| A．When seeing | B．When see | C．When we see it | D．When to see |
This is the first time that I _____ at the meeting.
| A．had spoken | B．have spoken | C．spoke | D．speak |