because of；come up；make good use of；such as；play a big part in；even if；be based on；believe it or not；be expected to；hold on

（1）It's more useful to learn modern languages，

such as

such as

English and German，than Latin．
（2）Childhood experiences often

plays a big part in

plays a big part in

shaping one's character．
（3）Could you

hold on

hold on

for a while？I'll see if Mr．Brown is in his office．
（4）Many beautiful fish are fast disappearing

because of

because of

the serious pollution．
（5）

Even if

Even if

you saw him pick up the money，you can't be sure he stole it．
（6）I was already a university teacher，

believe it or not

believe it or not

，when I was only 20 years of age．
（7）He told me to

come up

come up

to the front of the room so that everyone could see me．
（8）The meeting will begin at half past eight．Everyone

is expected to

is expected to

come on time．
（9）Many people agree that a good marriage

is based on

is based on

trust．
（10）If you

make good use of

make good use of

your spare time，I'm sure you will succeed sooner or later．