Complete each blank with one suitable word in the box:

Câu hỏi :

Complete each blank with one suitable word in the box: 

Lan and Razali __(1)__ once every two weeks. They are from different countries but they have been pen pals for over two years. They hadn’t seen each other __(2)__Razali visited Lan in Hanoi last week. Lan took her pen pal to many places of __(3) __ in Hanoi such as Ho Chi Minh Mausoleum, The Temple of Literature...... One day, the two girls went to the mosque on Hang Luocstreet. There, Razali __(4)__ while Lan was wandering around the mosque.

When they said goodbye to each other __(5) __ the end of the vacation, they promised that they __(6)__  in touch by mailing.