What are this?

What are this? What are this? What are {this}?They are English books what are you doing this Saturday?=what---- ------ ----- ---- ----this Saturday? What are you doing this time? This is what you are meant for. what are you going to do this What are people doing at this m______ 改错 :What are this?They're pinapples. what are you gonna do this weekend 改错 :What are this?They're pinapples. what are this,betty哪错了 what are you up to this week? what are you going to do this weekend?同义句 what are your____ ____ this wee There are two mistakes in this sentense.What are they? There are two mistakes in this sentenes.What are they? this what this what ? what are you going to do this weekend?同义句.what ()you()to do this weekend?