1 listened/ was explaining ( thì qktd)

2 bought/costs( thì qkd/htd)

3 won't be going ( thì tltd)

4 won't be having ( thì tltd)

5 slept ( thì qkd)

6 isn't ( be+interested)

7 was waiting/was arriving ( thì qktd)

8 read/heard/played ( thì qkd)

9 still burnt/were arriving ( thì qktd)

10 is attending ( thì httd)

11 haven't studied ( thì htht)

12 was looking/came ( thì qktd)

13heard/turned/was ( thì qkd)

14 was waiting ( thì qktd)

15 did/ was breaking ( thì qktd)

16 was playing/ was doing ( thì qktd)

17 drank / ate ( thì qkd)

18 wore / was seeing ( thì qktd)

19 started/was/came ( thì qkd)