1.is studying (now → chia HTTD)
2.has (usually → chia HTĐ)
3.don't have (every morning → chia HTĐ)
4. won't be able (tomorrow → chia TLĐ)
5. is - is playing
6.will go (next sunday→TLĐ )
7.got (last month → QKĐ)
8.has come (for 3 days → HTHT)
9.was
10.has bought
11.will be studying
12.will cycle
13.had already left
14.found - had bought
15.was riding