88. I am not sure whether/if

87. tells/told us not to be nervous

86. (that) I had left my wallet/purse at home

85. deserve to be respected

84. speaks/spoke highly of our English teacher

83. prefer/preferred to buy a new computer rather

82. told him not to go out alone at night

81. I don't think the work can be done

80. Could/Would you please

79. speaks highly of