问题标题：
【Helpme(正确形式填空)1.Swimmingandbikeriding(be)bothbothgoodactivitiesduringsummermonths.2.somepeoplethinkthatbanningthings(be)useless.3.Thequestionsraisedatthemeeting(be)veryimportant.4.Toolittlebrushing(cause)tooth】
问题描述：
Helpme(正确形式填空)
1.Swimmingandbikeriding(be)bothbothgoodactivitiesduringsummermonths.
2.somepeoplethinkthatbanningthings(be)useless.
3.Thequestionsraisedatthemeeting(be)veryimportant.
4.Toolittlebrushing(cause)toothdecay.
5.Oneoftheteenagers(have)thistosayabouttheexperience.
6.Threewell-balancedmealseachday(include)milk,meat,freshvegetables,andfreshfruit.
7.There(be)alotofviolenceinthatcity.
8.Plentyofexercise(make)uslookandfeelbetter.
9.Articlesfordailyuse(be)inabundantsupply.
10.What'stroublingme(be)thatIdon'thavemuchexperienceinthiskindofwork.
麻烦请写请答题时加上为什么,
填空部分是扩号全面一个地方。
麻烦请在答题时加上为什么，
兰中文回答：
1.Swimmingandbikeriding(are)bothbothgoodactivitiesduringsummermonths.Swimming和bikeriding是可数的两件事情.所以用are2.somepeoplethinkthatbanningthings(is)useless.正确理解句子含义,是...
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