Today is the best day of my life! All my years of training as an explorer have finally ______! [ ]

Would you like something to eat — ________ . I’m a little hungry.

We’ll have a picnic in the park this Sunday ________ it rains or it’s very cold

Chinese President Xi Jinping is reported foreign countries but I’m not quite sure about the exact number of the countries he visited.

Having entered the classroom, the teacher ___ the book on the desk.