1.請用Did造一個問句及答句 Did you get a gift last night? NO,i didn't get a gift last night 2.請用Were造一個問句及答句 Were you a student? Yes, i was a student. 3.助動詞後面要加? 原形動詞

Should we move to Mars or we stay on Earth? Mars has many many perfect resources for human to live on it,but Mars is too far from earth. We may build better space craft to let us be there faster.If the global warming getting more serious, will we go to Mars in these years, or we need to wait for longer time ? If I’m the scientist of eventing spacecraft, I would start discuss with my team now.