1.I really do not know definitely whether the bank would approve his application for a loan. 2.The outward expearances of these two animals look quite similar,but they don't belong to the same category.
1 I am not sure about the loan whether be give to him or not by the bank for his application. 2 The figure are very similar for these two animal, but they belong to difference breed.
I do not know for sure he will apply for the loan (loan) banks will give him. These two animal appearance is very similar, but they belong to the different type
1.I do not certainly know whether the loan he applied for will pass or not. 2.these two animals is so alike in their outlooks,but they belong to different species.