---Where did you save the drowning girl, ________ parents were both professors?---It was from the lake ______ she often went fishing.
I found _________ hard to make myself understood by the old man.
Have you realized the part the computer has ________ in daily life?
Mr. King didn’t know __________ yesterday evening.
I thought she must be from Shandong Province because she spoke with a strong Shandong _________.
She had an advantage over others because she had a good ________ of both Chinese and English.