基本语法。 1. The streets here _____ (clean) by the cleaner

基本语法。
1. The streets here _____ (clean) by the cleaners every morning.
2. These flowers _____ (water) once every three days.
3. Many new things _____ (invent) by the scientists in the 20th century.
4. Yesterday a composition on protecting animals __ ___ ( write) by the students of our class.
5. The little girl had learned to play the piano _____ the age of five.
unnb 1年前 已收到1个回答 举报

weicz11 春芽

共回答了16个问题采纳率:100% 举报

1. are cleaned 2. are watered 3. were invented 4. was written5. at

1年前

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