_____only 20 minutes to go before the train left, I felt uneasy in the taxi to the railway station.
____ matters most in learning English is enough practice.
Only whenin the afternoonable to leave.
There are 51 students in Class Three, _____ failed in the test.
______ happened to be no one in that house when the typhoon hit the area.
________, as long as I’m with nature, I don’t care.