1. Don't worry about the cat. It (only eat).....once day
2.I can't work out the answer. (You know)....what it is?
3.What's the matter? Why (you, stare)....at me like that?
4.(you speak)....English? I'm looking for a hotel
5.Elena (stay).....with me while her house is being decorated
6.Yoy should go on a diet. (You, put) on weight
7.(they,speak)....French or German? I can't tell the difference