Use “It is ... (when/where/because) that”to make sentences. 1 they, the day before yesterday, set out 2 by the roadside, find, the lost wallet, I 3 not until, get everything ready, he, for the experiment, leave, the lab, Xiao Wang Use "It takes sb. time to do ... OR It takes time for sb. to do ..." to make sentences 4. half an hour, my parents, back to the hotel, finally find their way 5. this difficult math problem, almost two hours, work out, we 6. we, will, more than three months, this art project, accomplish