—Would you like to go for a walk with me, Allen?—I'd love to, ________you don't want to go alone.

--Hurry up! The bus is coming.--Wait a minute. Don’t cross the street       the traffic lights are green.

My father didn’t go to bed ______ he washed his car last night.

We can’t go to the mountain ________ the bad weather.

—Tom, you look tired this morning. What’s wrong?—I was so busy that I didn’t go to bed________12 o’clock last night.