Chia động từ trong ngoặc: ......you......(be) a good student?

$\mathbf{Chia}\mathbf{ }\mathbf{động}\mathbf{ }\mathbf{từ}\mathbf{:}$

1. ......you......(be) a good student?
2. I (never/be)......sailing, what's it like?
3. Janet (start)......a new job in September.
4. She......(cook) dinner when we (arrive)...... .
5. She (just/come)......back from a Mediterranean cruise.
6. When they......(drive) home last night they (see)......a terrible accident.
7. I am very sorry but I (not finish)......reading the book yet.
8. She (be)......ill since last Monday. She won't be able to go to the sea-side next week-end.
9. I decided to learn Greek while we (live)......in Delphes.
10. They......(go) to town when I (see)......them this morning.