一般现在时和一般过去时的被动式 — 英语选择题

Every winter, warm clothes ___ to poor families, and last winter, many blankets …

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…

用所给动词的适当形式填空：More space stations ______ (build) on Mar…