Bill is not a fast runner and he doesn't have a chance of winning the marathon, but he will _____ the race even if he finishes last.
| A．keep on | B．keep to | C．stick out | D．stick to |
______ you have made a promise, you should carry it out.
| A．Once | B．Until | C．For | D．While |
If you ______ stealing in the supermarket, you’ll be sent to the police station immediately.
| A．catch | B．are catching |
| C．will be caught | D．are caught |
—My Dear! I've just missed the lecture.
—That's too bad.I'm sure you it if you had got up earlier.
| A．could have caught | B．had caught |
| C．would catch | D．could catch |
—I am afraid I can’t help you with your project. I ________ a model these days.
—It doesn’t matter. I will finish it by myself.
| A．make | B．will be making |
| C．am making | D．have made |
—I wonder if you could go with me to the cinema.
— Don’t disturb me. I ______ a composition all the morning and haven’t finished it yet.
| A．write | B．was writing |
| C．have written | D．have been writing |