从括号中选出适当的代词完成句子。 1. Who will teach _____ (us / our) English this term? Is _____ (it / he) Mr Wan g? 2. Mary and her sister went to the farm with a cousin of ______ (theirs / them). 3. Every day Mr Li checks ______ (our / us) homework and corrects the mistakes we make. 4. Look! The desk has lost one of _______ (its / it's) legs. 5.-Oh! I came in a hurry and forgot to bring food. -Don't worry. You can have ______ (my / mine).