Ex 2: Complete these sentences by using “S+be+ adjective to Vnt” structure.
1.It's (normal/ feel) .................................. tired after a long trip.
2.It's (difficult/ play) ...................................the piano well.
3.It's (impossible/ complete) ...................................this project in 24 hours.
4.It's not (unusual/ see) ...........................................traffic jams in Hanoi.
5.It would be (awkward/ call) ..................... him again.
6.It's not (easy/ learn) .................................................... Japanese.
7.It's (difficult/ explain) ............................................some grammatical rules.
8.It was (important/ eat) ............... clean and healthy food
9.It's (dangerous/ go) ...................... out after midnight.
10.It's (risky/ invest) ..............too much money on lottery.