I lost my way in complete darkness and, matters worse, it began to rain.
Only _______ as an interpreter _______ how important it is to grasp English.
The physics teacher once said that we first _____the lightning followed by thunders because light ______ faster than sound.
You'd better _______ your score and see if you have passed the exam.
Would it be for you to pick me up at four o’clock and take me to the airport?
— Excuse me, what's the time for Train 8201?— It _____ at seven and you can wait in the hall.