来自刘宝艳的问题
thesmokewassothickthatiwashavingtrouble________AtobreatheBinbreathCwithbreathingDbreathing
thesmokewassothickthatiwashavingtrouble________
AtobreatheBinbreathCwithbreathingDbreathing


thesmokewassothickthatiwashavingtrouble________AtobreatheBinbreathCwithbreathingDbreathing
thesmokewassothickthatiwashavingtrouble________
AtobreatheBinbreathCwithbreathingDbreathing
答案:D
havetrouble(in)doingsth.表示“做某事有困难”.