動名詞當主詞/It代替

It is great_____ around the world.

• traveling

• to travel

Making cards ____ me happy.

• makes

• make

• making

• to make

____ in the river is dangerous.

• Swim

• Swimming

Taking the metro（搭地鐵） is convenient( 方便的）. (用It is...改寫句子）

在網路上（on the Internet) 預訂房間（book a room)是容易的(easy)。

用Ving開頭

在網路上（on the Internet) 預訂房間（book a room)是容易的(easy)。用It is ... 開頭

__ common to go camping these days.

• It's

• We're

• You're

• That's

__ takes Nicole two hours(小時) to practice（練習） playing(彈） the piano(鋼琴) every Saturday.

• It

• She

• This

• That

It's great___ swimming on hot summer days.

• go

• goes

• to go

• going

It's good ___ people to relax.

• for

• X

• to

• is