Joke Collection Website - Talk about mood - English problem: correct the following sentences! I want all the answers and tell me how to correct them! ! ! Urgent! ! !

English problem: correct the following sentences! I want all the answers and tell me how to correct them! ! ! Urgent! ! !

1. We have been in China for three years. For+ time period is generally used in the past tense of ago general+ time point when it is completed.

2. Books bought a week ago+time period are generally used in the perfect ago general+ time point general past tense.

Bud is an instantaneous verb.

3. Where have you been, Jane? I've been there and come back. He's gone and hasn't come back.

You shouldn't throw it away. Pronouns are placed between verbs and prepositions.

As we all know, Mingming is good at mathematics. Be good at/be good at