Mary (will cook) dinner as soon as she _ (is) through with her homework.
It (is) 7 o'clock now. I (do not, know) when he (will return) and whether he (will come) at all.
They (are leaving) for Paris in two days' time. The plane (starts) at 3 pm sharp.
Tomorrow, if you (feel) well, I (will let) you go for a walk.
We (shall go) on an excursion if we (pass) the exams successfully.
Everyone (knows) that when it (is not) hot, snow (begins) to melt easily.
I (promise) I (will write) to you every day.