disposable，timid，defend ，distrustful，environmentally-friendly，probably，discard，hateful ，awareness，misunderstanding，terrific ，thoughtful，apologise，charity，recyclable

（1）Joining the exchange tour to London is a

terrific

terrific

opportunity to improve my English.
（2）It is shameful that some people

will discard

will discard

food containers，water bottles and masks along hiking trails when they go hiking.
（3）Proceeds from the sale of these Christmas cards will go to a local

charity

charity

which helps the homeless.
（4）Driving electric cars is an

environmentally-friendly

environmentally-friendly

way to reduce air pollution.
（5）You should

apologise

apologise

for hiding the truth from her.You should be honest with her.
（6）The campaign Earth Hour successfully raises the public's

awareness

awareness

of light pollution.
（7）There must be some

misunderstanding

misunderstanding

.I have never ordered this dish.
（8）I often request restaurants not to give me

disposable

disposable

cutlery when I order takeaway.
（9）Trolls post

hateful

hateful

messages and comments on the Internet to seek attention.
（10）Some victims of bullying are too

timid

timid

to ask for help.