A： Hi， Jane． You made great progress in English during the long winter vacation．（1） ？
B： Just by taking online courses and finishing my homework in time． Sometimes I watched the online classes again when necessary．
A： But I didn't make full use of the time． So I can't catch up with my classmates now． I feel worried and hopeless．
B：（2） ! Read a lot and do exercises， and you'll get improved．
A： Good idea． When I have difficulties， （3） ？
B： No problem． I am always there if you need help．
A： It's very kind of you． By the way， what's the title of your tomorrow's speech？
B： Only 1.5℃．
A： Sounds interesting． But it's just a number．（4） ？
B： It means we need to keep temperature increases below 1.5℃．
A： If not， what would happen？
B： Unexpected disasters （灾难） would hit the earth again and again．
A： True． The forest fires in Australia have given us warnings．（5） ？
B： The fires lasted for several months． It is reported that countless wild animals have been killed and thousands of people have lost their homes in the big fires．
A： What a bitter lesson!
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