1) He walked slowly . His leg was painful ( because of ) 2) The family left the house . Then the house was burned ( before ) 3) Maybe aliens will invade the Earth and do the same thing . ( might ) 4) " Will we have flying cars by 2025 ? " Tim wanted to know . ( whether ) em đang cần gấp ạ

1. Because of his painful leg, he walked slowly. (Because of = vì).

2. Before the house was burned, the family had left the house (before = trước khi).

3. Aliens might invade the Earth and do the same thing (might = có thể).

4. Tim wanted to know whether we would have flying car by 2025. (whether = liệu/ nếu)

:))) kh cop nhóe tự làm hết:))

Thenk:)