— I need to advertise for a second-hand mountain bike.
— _______？David just plans to sell his present one.
| A．Why bother | B．Why not | C．So what | D．What for |
—Guess what? Tom has failed in the exam ____ second time.
—How come? He is ___ second to none in English in our class.
| A．a; a | B．the; a | C．a; / | D．the; the |
The train is running ______120 kilometres an hour.
| A．at a speed | B．at the speed | C．at a speed of | D．on a speed of |
Jumping out of ____ airplane at ten thousand feet is quite _____ exciting experience.
| A．/ ; the | B．/ ; an | C．an; an | D．the; the |
Please remind me _______ he said he was going. I may be in time to see him off.
| A．where | B．when | C．how | D．what |
He _____ up the car, hoping to arrive home before dark.
| A．gave | B．turned | C．picked | D．speeded |