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!