I / have / toothache / yesterday / because / I eat / many / sweets / .

3/20

I have a toothache yesterday because I ate many sweets.

I had a toothache yesterday because I ate many sweets.

I have a toothache yesterday because I eat many sweets.

I had a toothache yesterday because I eat many sweets.

Giải thích

Đáp án đúng là: B

Cả 2 vế đều phải dùng quá khứ đơn vì có yesterday

Dịch: Hôm qua em bị đau răng do ăn nhiều đồ ngọt.