--- I will come to attend your lecture at 10:00 tomorrow. --- I’m sorry, by then my lecture will have ended and I ______ my guests in my office.
Is this factory ______ the foreign investors are going to visit next month?
I couldn’t move my legs. It was ______ they were stuck to the floor.
Can you tell me the name of the school ______ you visited last week?
The doctor ______ a cure for the disease .
You really don't know what we ______ while we were working on this project .