Tom didn’t go hiking with his classmates his illness.A. because B. because of C. since
Please be quiet. I have ____________ to tell you
Tom made a fire_________ us _________ warm yesterday.
–________ did you do yesterday? –Before I visited my good friends, I went to the zoo.
The guide taught us how________ a model robot.
The ______doctors like eating beef and _______ noodles.