----Why are you so tired these days? ----- Well, I have _____homework to do.

Nelson Mandela was       of South Africa from 1994 to 1999.

I used to ___________ in the country. But now I am used to ___________ in the city. 

 — _____do they surf on the internet ?—Twice a week. 

 Mary’s grandpa lives ______ in the mountain village. He tells her he feels very______. So she’s going to visit him next week.