1.Why ……………………..you ………………………….(not go) to the party last night?
2.I’m going to the post office(buy) ………………………………some stamps
1.Why ==..you ==-…(not go) to the party last night? 2.I’m going to the post office(buy) =.

By Amaya
By Amaya
1.Why ……………………..you ………………………….(not go) to the party last night?
2.I’m going to the post office(buy) ………………………………some stamps
1.didn’t you go(last night->QKĐ)
2.to buy(in order to=so as to=to+V-inf:để làm gì,chỉ mục đích của cộng việc)
1. Why didn’t you go to the party last night?
2. I’m going to the post office to buy some stamps