During the scientific experiment, Mr. Chen carefully poured the water into the tube, with my classmates _______ beside to see what would happen.
We drove to the airport to meet an expert from Germany, about 50 years old, his hair ________.
Was it from the lake ________ he often went fishing ________ he saved the drowning girl?
I have ________ French. What about you?
I ________ with my grandma because my parents have gone abroad for further study.
How can they learn much ________ they spend so much time playing computer games?