---It’s a long time since I saw my parents. ---______ them this weekend?
In some developed countries, larger population is ______________ in their big cities.
Accurately, my granny has got no hobbies at all ______ you think watching TV as one.
A person ________ with H7N9 viruses will be more likely to die of lung dysfunction.
Don’t be too general. Please give a ________suggestion on how to deal with this difficulty.
______ having a busy schedule, Ariel Lin attended an environmental art exhibition.