The weather ________ nice yesterday. A. was B. were C. is D. are

`->` Chọn A

`->` DHNB : yesterday `->` quá khứ đơn

`@` QKĐ ( đối với động từ tobe )

S + was/were + ...

S + was/were + not + ...

Was/Were + S + ...? `-` Trl : Yes , S + was/were    /  No , S + wasn't/weren't

Wh-questions + was/were + S + ...?

`***` 

I/She/He/It/N số ít/... + was

You/We/They/N số nhiều/... + were

`-` "The weather" - N số ít `->` dùng 'was'