Cho tam giác ABC có góc A > 90 độ. Kẻ AH vuông góc với BC tại H.         CMR: AB^2 - AC^2 = BH^2 - HC^2

Supply the correct form of the verbs in the bracket.

1, The Lord Maylor is standing up. He (make) ___ a speech.

2, Unless he runs he (not catch) ___ the train.

3, He (lose) ___ his job last month and since then he (be) ___ out of work.

4, You (write) ___ to him tonight?

- Yes, I always (write) to him on his birthday. You (want) ___ to sent ant massage.

5, The fire (smoke) ___ horribly. I can't see across the room.

- I (expect) ___ that birds (build) ___ a nest in the chimney.

Câu cuối cùng chữ đầu là "She" nhé

Làm hộ mình câu 3 với. Thanks much!

Thanks!

Làm câu 2,3 giúp mình với. Thanks!