I left my umbrella in my room. Could you wait here_____ I go back to get it?
— Excuse me. May I know your _______?— OK. It's No. 3. Zhongshan Road.
—Can you play tennis _______ me?—Sure, I' d love to.
—Who’s that boy?—He is my cousin, and _______ name is Jack.
—Zhang Lei, do you have _______ soccer ball?—Yes, I do.
Can the scientist ______ [iks'plein] the reasons for changing the plan?