选择恰当的单词，补全句子。
is  are  was  were  be
【小题1】There ______ an apple on the table yesterday.
【小题2】There ______ an apple and two pears on the table.
【小题3】There ______ two apples and one pear on the table.
【小题4】There will ______ an apple on the table.
【小题5】There ______ some apples on the table yesterday.