I’m fine — I just felt a bit sleepy and tired, that was ________ I went to bed so early."
The beautiful town, _____ we spent our summer vacation last year , lies at the foot of a mountain.
—It’s such a beautiful day. Why not have a picnic with us? —_____. But I have a lot of homework to do.
—Listen! There is a knock on the door. Who _____ it be? —It must be Jack. Just now I sent for him.
—What made her so happy? —_____ her son passed the driving test.
I would have come earlier, but I _____ that you were waiting for me.