It _______ long before we ______ the result of the experiment.
—Tom, you didn’t come to the party last night? —I ______, but I suddenly remembered I had homework to do.
As your spoken English gets better, so_____ your written English.
The boy insisted that he the money and he at once.
With more forests being destroyed, huge quantities of good earth _____ each year.
—Would you like to join us in playing the game? —I’m sorry, but my homework ______ by now.