A report says school maths standards in England have failed to improve in the last 30 years, ______ than those in mid-1970’s, when only 20% of the students could pass maths exams.
Either his wife or his friends __________ his birthday party.
No one knows __________ it will be fine tomorrow and __________ we can play basketball together.
Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.
They were having an argument about __________ turn it was to do the cooking.
His son has __________ the running of his company, including six London theatres.