I don’t think ____ possible to master a foreign language without much memory work.
The Japanese government stubbornly claimed the ownership of Diao Yu Islands belonging to China, ______ greatly hurt the friendship between the two peoples.
– Shall we go out for lunch?– Don’t disturb me. I ______ the letters all morning and ______ six so far.
A lot of people ______ the theory that acupuncture can produce chemicals in the body which reduce pain.
If _____ without following the doctor’s instructions, the medicine may have serious side effects.
The Chinese government has promised to do ______ lies in its power to ease the pressure of high housing price for average-income families.