The girl didn’t help you last time. _____ you don’t want to talk to her.
The harder you work at your lessons, the greater progress you ________.
--- She has been ill for a week. ----- I _____ with her at noon tomorrow.
Students are often warned that anyone who leaves the classroom at night must remember to _____ all the lights, or he will be fined.
____ he was not rich enough to buy whatever he wanted, Edison decided to make his new laboratory the best.
We still cannot persuade him to give up smoking ____ hard we tried.