Answer:
1 She learned to play the drum from Mrs. Gupta . (past tense should be used according to the sentence)
2 She makes delicious pizzas. (Simple present should be used according to the sentence)
3 You are supposed to reach the station by now .(Plural verb used according to the sentence)
4 I am planning to go trekking in the mountains. (Singular verb used according to the sentence)
5 Are you going out Today? (Plural verb used according to the sentence)
6 Why have they left? (Plural verb used according to the sentence)
7 A group of trekkers are climbing up the hill .(Plural verb used according to the sentence)
8 Jabin and David are good friends. (Plural verb used according to the sentence)