The twins look the same. Mr Li find ______ hard to tell one from the other.A it B them C her D that
Thomas Edison considered genius to be _____ one per cent inspiration and ninety-nine percent perspiration.
All foreign visitors are requested to _____ with the regulations in this area.
These continual _____ in temperature make it impossible to decide what to wear.
The illness from which Mary is suffering has now been _____ as hepatitis (肝炎).
A completely new situation is likely to _____ when the school leaving age is raised to 16.