情态动词的被动语态 — 英语填空题

Rewrite the sentence in the passive voice without changing its meaning: People s…

Choose the correct answer: In our city, old clothes ______ to make bags so that …

英语课上，外教问你："What do you do on the weekend?" 你想说自己�…

At the Mars base, clean water ______ (store) in large tanks.

On Mars, a person must wear a special suit that supplies air and protects the bo…

For this test, a rover can move only when it has power. The rover is moving. Whi…