able，appropriate，explore，prepare，lose，put upside down， do me a favour，focus on，have a great effect，over and over，

（1）If you're going to attend a formal party，you should dress

appropriately

appropriately

.
（2）It is believed that when Fu character

is put upside down

is put upside down

，happiness arrives.
（3）I read the story

over and over

over and over

until I almost learned it by heart.
（4）Jennifer spent the whole afternoon

exploring

exploring

the ancient town on foot.
（5）I placed an order a week ago，but I still haven't received the goods.Can you

do me a favour

do me a favour

and find out what's going on？
（6）In my opinion，friends should

focus on

focus on

face-to-face communication，and this is the best way to maintain healthy friendship.
（7）When computers were invented，very few people realized that they

would/were going to produce a great effect

would/were going to produce a great effect

on the future life.
（8）He suffered a（n）

loss

loss

of memory after a serious car accident.
（9）Amundsen got to the South Pole before Scott because he had made more

preparations

preparations

before leaving for the Pole.
（10）It is these important social skills that

enable

enable

us to develop friendships.