choose the appropriate preposition give in the brackets and fill in the blanks :
1. He was waiting ____ the main gate ( beside / besides)
2. our teacher always insistes ____ our being punctual. (on /onto)
3. she was standing at the bus stop ____ a long time. (since/for) .
4. We have to submit our science project _____ the end of this week. (by/within).
5. The lands was ploughed ____ the farmer with the help of tractor (within/by)
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