1.is,are.
2.how much
3.how many
4.shorter
5.cleverest
6.was
7.were
8.watches
9.watched
10.will go
11.eating
Was sleeping
are going to travel
goes
lose
is reading
are looking
had been waiting
started
B13) performing
B14) badly
B15) useless
B16) terrifying
B17) painful
B18) impressive
It is difficult to be a parent.
It is dangerous to swim along if you can't swim.
It is impossible to breath under the water.
It is stupid to sing in midnight.
It is boring sitting along all day.
In a dark, dark street, you see a dark, dark house.
In a dark, dark house , you see a dark dark room.
In a dark dark room, you see dark dark table.
On a dark dark table, you see a dark dark box.
In a dark dark box you see a dark dark monster
a dark dark monster has green green eyes.