如果你错过了火车，你总可以住在我们这里。

If you miss your train, you ___can ___always ___stay with us.

如果博物馆很拥挤，你总可以去公园观光。

If the museum is busy, you ___can ___always ___do some sightseeing in the park.

如果你想省钱，你总可以在家做饭而不是出去吃。

If you want to save money, you ___could ___always ___cook at home instead of eating out.