—A ruler is 2 dollars and a pen is 3 dollars. How much are they? —They are ________.
We are offering prizes ________ best pictures. A.to B.for C.with
If you are ________ the right place ________ the right time,take a picture. A.in;at B.at;in C.at;at
Please connect the digital camera ________ the computer. A.to B.into C.with
There is someone at home because the lights are ________. A.out B.on C.not
Mary,please show ________ your picture.