Circle the correct word to complete each sentence．(圈一圈)
－Who ate the sandwiches?
－Sam does/did．
－What did you buy yesterday?
－I buy/bought some vegetables．
－Did you play football?
－No, I did/didn't．
－Did/Do you go to the park on Sunday?
－Yes, I went with my sister．
Read and circle．(读一读，圈一圈)
－Are you from the USA?
－No, we/they aren't．
－Are your T-shirt and jacket from Mexico?
－Yes, they/we are．
－Are your grandma and grandpa from China?
－No, they/we aren't．
－Are you and your sister from Russia?
－Are Amy and Sam from Great Britain?
－Yes, we/they are．
My Dad is/are working．