7. Although there is a difference in spelling and pronunciation between American English and British English, both of the countries have much to _______.
31. Hurry up! By the time we get to the church, the marriage service _____.
30. John has recovered and _________ 3 kilos since he left hospital last month.
29. Only ____ did she realize the stress he was_____.
28. ____, he sometimes makes mistakes.
27. The transportation will improve a lot in Changzhou, with another three bridges ________ over the Grand Canal in the near future.