21. On our first day in London, our guide (tell us / what / do) in London. She (show us / where / catch) the nearest bus or underground. We also (learn / how / buy) tickets for the London underground. On our second day, we (not know / where / go) on a sight-seeing tour. We (ask our guide / where / get) tickets for the sight-seeing tours. She (explain / where / find) the tour guides and (how much / pay) for a sight-seeing tour. On the sight-seeing tour we (find out / how / hop off and on the busses to see as much of London as possible. We soon (know / which bus / wait for) at the stop. We only (wonder / what / visit) first
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Sinh Học lớp 12
