Что надо вставить?
You .... really be sitting here.
a.) couldn't
b.) shouldn't
You .... be older than me, but that doesn't mean you're cleverer.
a.) could
b.) may
I'm afraid that nobody ... help me in that kind of situation.
a) should
b) would

You .... really be sitting here. b.) shouldn't You .... be older than me, but that doesn't mean you're cleverer. b.) may I'm afraid that nobody ... help me in that kind of situation. b) would

You shouldn't really be sitting here.You may be older than me, but that doesn't mean you're cleverer.I'm afraid that nobody would help me in that kind of situation.