Every day I do my homework _____ two hours.
There is _______ “U” and _____ “S” in the word “useful”.
---What’s in the fridge? ---A few ___________, but little _________。
--- How often does Daniel exercise?--- ___________.
Doctors say we need more fruit and vegetables to be ________ because _______ is very important.
--- __________your twin sister’s name Sandy?--- Yes, _______ is.