We don’t know __________ he can make a plane by himself. It is amazing.
—Where are Jane and her parents?—They _____ Japan.
-----I am going to have a test next week.-----__________!
There were _________ doctors, so Dr Norman Bethune had to work on his own.
My little brother caught a cold, ________ he didn’t wear warm clothes yesterday.
I couldn’t work out this problem ________ my teacher helped me.