By the time I ____________, I realized that I had left my umbrella in the shop.
—___________________—He is going fishing.
—Would you like to go for a picnic?—Yes, __________.
—When did you finish ________ these pictures?—Yesterday afternoon.
—I _____ __ to bring my notebook. —No problem. You can borrow some paper from me. Have a good time!
Hangzhou is _______ the West lake.