1. Let me explain to you how you drift whitecaps. (Go + V-ing) 2. Workers next year they will build at least 30,000 housing units. (Future) 3. I really envy you fortunate enough to see his hero up close. (Up close) 4 riding a motorcycle, you'd better wear a helmet to ensure safety. (Make sure that) 5 When the little girl was preparing to jump into the river, the tour guides to stop her. (When) 6. I can not wait to see when you travel photographs. (Can't wait to) 7. Two months does not sound a long time, but you have to be ready for the past two months have enough food and water. (Sound like) 8, we will visit many exciting attractions, a lot of surprising. (Astonishing) 9 even if there is heavy rain, I can not help but absent on leave. (Even if) 10. Toby letter yesterday that he will return to London later this month. (In the past when the future)