John’s parents were worried that he _________ too much time chatting with friends on the phone.

With no central government,the island was ruled by kings, a different region of the country.

To keep safe ____ an earthquake, you should remain at a spot in your room where nothing may fall on you[ ]

Heisgoingtohospital_____________amedicalexaminationnextweek．

Diaoyu Island belongs to China．一Surely it does! We Chinese never ________ it up．