Fill in the articles a/an/the/— where necessary. 1) they go by air, but this time they decided to go by sea. 2) they bought tickets and travelled all through night to calais. 3) they were in time to go on ship waiting at quay. 4) they went straight down to restaurant for breakfast. 5) they saw that coast of france was disappearing and ahead were white cliffs of dover. 6) they joined many passengers who were leaning on rails watching english coast. 7)it seemed much more exciting than getting plane at london airport.8) at entrance to customs office their passports were checked. 9) officer did not ask them to open their cases and in minute they were through gate, on platform and seated on london train.