but I‘m sure it must be s______ in my bedroom

It must be John who is in the office.I'm sure it()be John.Is my name is joe .i'm from USA .But i'm s______ in NO.1 Middle I can＇t find my watch,but it must be （）in ... I can't find my watch .but it must be s____ in the house 横线应 - Can he arrive on time? - . But I’m not sure. A. He must be 翻译Can it be true ,Tom?It may be ,but I'm not sure. My key is nowhere to be found.I it in my bedroom. The light is on in his room ,I'm sure he ___back A.must be B My parents want me to be a doctor,but I'm not sure about but my friends and i think it must be teenagers having fun为什 but you must be sure not to feed it more than it will eat ri He be married,but I'm not sure.