The last time we had great fun was _____we were visiting the Water Park.
| A． where | B．how | C．when | D．why |
We were swimming in the lake _____ suddenly the storm started.
| A．when | B．while | C．until | D．before |
Alice didn’t want her parents to know.
| A．what has she done | B．what was she doing |
| C．how she had done | D．what she was doing |
It tookbuilding supplies to construct these energy-saving houses. It took brains, too.
| A．other than | B．more than | C．rather than | D．less than |
Every evening after dinner, if notfrom work, I will spend some time walking my dog.
| A．being tired | B．tiring | C．tired | D．to be tired |
—I don’t know if Tom will attend the party until now.
— Really?Tom is eager to do so.
| A．In the end | B．As a result | C．On purpose | D．Believe it or not |