54、( )enough time and money, the researchers would have been able to discover more in this field.

68. The cold drink( ) him after his long hot journey.

67. Swarms of wasps are always invading my garden. They are a thorough( )

66. The local council has decided to take the ( ) of the hotel to court.

65. ( ), he would not have recovered so quickly.

64. ( )the two, Bob is ( ) student.

63. This missile is designed so that once ( )nothing can be done to retrieve it.

62. We could( ) him with a detached house when he came, but he had specifically asked for a small flat.

61. He is not under arrest, ( ) any restriction on him

60. You and I could hardly understand, ( ).

59. He prefers( ).