1.are sitting,are wating,am writing

$\longrightarrow$Vì có at the moment-dhnb thì HTTD

$\longrightarrow$Câu trúc: S+am/is/are+Ving

2.were you doing

$\longrightarrow$Vì có at 8o'clock yesterday morning-dhnb thì QKTD

$\longrightarrow$Cấu trúc: S+was/were+Ving

3.to go

$\longrightarrow$Vì có decide+to V: quyết định làm gì

4.was

$\longrightarrow$Vì có câu trước dùng QKĐ nên câu sau cũng dùng QKĐ

$\longrightarrow$Cấu trúc: S+Ved+O

$#tytyrrte$

1. At the moment, we (sit) are sitting in a Cafe. We (wait) are waiting for the museum to open, so i (write) am writting some postcards

` => ` Thì HTTD, DHNB: at the moment.

2. What did you (do) do at 8o'clock yesterday morning?

` => ` Thì QKĐ, DHNB: yesterday.

3. We decided (go) to go out for dinner.

` => ` Cấu trúc: decide + to V: quyết định làm gì.

4. Ba and Nam went to the doctor because they (be) were sick.

` => ` Thì QKĐ.

` #MA `