It’s not possible that Danny’s at school. It’s only 7a.m. [Danny ............ at school yet. It’s only 7a.m.] (CAN’T)
can’t be
10
I think my bag is still in the classroom. I only left it there five minutes ago. [My bag ............. in the classroom. I only left it there five minutes ago.] (SHOULD)
should be
10
I think I’m going to pass this test because I’ve studied hard. [I ............... this test because I’ve studied hard.] (OUGHT)
ought to pass
20
Perhaps it’s going to rain later. [It ............ later.] (MIGHT)