Was his father very strict with him when he was at school?—Yes.He had never praised him ___ he became one of the top students in his grade

I should not have laughed if I ______ you were serious.

_________you have a rich knowledge of Chinese history, try acting as a guide for these foreign visitors

Most of the old are somewhat cut off from the fast developing world and that’s why they are so easily ________ by the cheaters.

The player was badly_____ in the accident.