As a student in Senior Three, I must work hard. __________, I should take exercise to strengthen my body.
I ________ use a clock to wake me up because at six o'clock each morning the train comes by my house.(2012·新课标全国)
We________finish it ahead of time, though it was such a tough task.
She was very brave.Even though she'd hurt her leg, she________go back alone.
The fire spread through the hotel very quickly but everyone________get out.(全国)
I'm going to Europe on vacation together with John if I ________ find the money.(2012·全国Ⅱ)