—Do you know ______ he is going to stay in Shenzhen? —Sorry, I don’t know. Maybe a few weeks, but I’m not sure.
The road was covered with sand ______ the heavy sandstorm.
______ he tried many times, he still didn't move the heavy box.
What do you think “anxious” ______?
--What is your father like ? --_____________________.
If I felt some pain, I would stop _________.