A serious illness, ______ its nature, is almost always painful.
The engine of the ship was out of order and the bad weather ______ the helplessness of the crew at sea.
______ students passed the exam although it was a little difficult.
As we all know, many Chinese words have come into English, ___ typhoon, tofu and kung fu.
Try to _____ the children down. They’re too excited.
I am very grateful for your assistance, and hope that one day 1 may be able to do something for you__________.